This measure would urge the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code.

This measure would urge the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code.

This measure would urge the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code.

WHEREAS, The City of Eastvale was incorporated on October 1, 2010. Located in the County of Riverside, before incorporation Eastvale was predominantly dairy farms and agricultural land; and

WHEREAS, The United States Postal Service uses Zone Improvement Plan Codes, commonly known as ZIP Codes, to route mail and deliver packages. ZIP Codes assist the United States Postal Service in meeting its obligation to provide quality mail delivery to the American public at reasonable prices; and

WHEREAS, The City of Eastvale shares the ZIP Code 91752 with the City of Jurupa Valley. The ZIP Code is coded as the former Mira Loma community, which was annexed by the Cities of Eastvale and Jurupa Valley. Additionally, the City of Eastvale also shares the ZIP Code 92880 with the City of Corona; and

WHEREAS, The City of Eastvale has grown exponentially in the last two decades and currently has an estimated population of over 70,000, according to 2023 census information; and

WHEREAS, Since its incorporation, the City of Eastvale has experienced various challenges because it shares ZIP Codes with neighboring jurisdictions; and

WHEREAS, It is difficult for certain businesses to expand in the City of Eastvale because commercial developers and businesses evaluate expansion decisions based on trade areas that are analyzed by ZIP Codes; and

WHEREAS, Because the City of Eastvale does not have its own ZIP Code, its population demographics and economic data are inaccurately represented in various Geographic Information System (GIS) platforms that entities utilize to inform commercial attractiveness, insurance payment rates, and sales tax distribution decisions; and

WHEREAS, Eastvale residents and visitors experience navigational and mail delivery challenges because many addresses in the City of Eastvale are incorrectly identified as being located in Corona, Jurupa Valley, or Mira Loma; and

WHEREAS, Having an address improperly associated with another city has led to increased insurance rates for Eastvale residents due to being grouped with other jurisdictions; and

WHEREAS, Lack of a definitive ZIP Code causes confusion with voter registration, misdirected property, possible decreased sales tax revenue, and decreased property values because comparable sales are mixed with adjacent communities and are not exclusive to the City of Eastvale. Thus, the continuity of property values is disrupted; and

WHEREAS, The City of Eastvale is also concerned about possible delays in response efforts in the event of large-scale emergencies such as wildfires, which have become fairly common; and

WHEREAS, Eastvale residents eligibility for sport league participation is impacted because many associations and sport entities set team limits and restrictions based on ZIP Codes; and

WHEREAS, The City of Eastvales independent ZIP Code advocacy efforts have been widely supported by local governments and community organizations, including the City of Chino, the City of Corona, the City of Norco, the City of Ontario, the Chino Valley Chamber of Commerce, the Eastvale Chamber of Commerce, the Eastvale Chinese American Association, the Eastvale Kiwanis Club, and Norco College; and

WHEREAS, Granting the City of Eastvale a new and independent ZIP Code would address its emergency management, public safety, business attraction and retention, and insurance coverage challenges caused by factors that are outside of its control; now, therefore, be it

Resolved by the Senate and the Assembly of the State of California, jointly, That the Legislature urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code; and be it further

Resolved, That the Secretary of the Senate transmit copies of this resolution to the President and the Vice President of the United States, to the Speaker of the House of Representatives, to the Minority Leader of the House of Representatives, to the Majority Leader of the United States Senate, to the Minority Leader of the United States Senate, to each Senator and Representative from California in the Congress of the United States, and to the author for appropriate distribution.

WHEREAS, The City of Eastvale was incorporated on October 1, 2010. Located in the County of Riverside, before incorporation Eastvale was predominantly dairy farms and agricultural land; and

WHEREAS, The United States Postal Service uses Zone Improvement Plan Codes, commonly known as ZIP Codes, to route mail and deliver packages. ZIP Codes assist the United States Postal Service in meeting its obligation to provide quality mail delivery to the American public at reasonable prices; and

WHEREAS, The City of Eastvale shares the ZIP Code 91752 with the City of Jurupa Valley. The ZIP Code is coded as the former Mira Loma community, which was annexed by the Cities of Eastvale and Jurupa Valley. Additionally, the City of Eastvale also shares the ZIP Code 92880 with the City of Corona; and

WHEREAS, The City of Eastvale has grown exponentially in the last two decades and currently has an estimated population of over 70,000, according to 2023 census information; and

WHEREAS, Since its incorporation, the City of Eastvale has experienced various challenges because it shares ZIP Codes with neighboring jurisdictions; and

WHEREAS, It is difficult for certain businesses to expand in the City of Eastvale because commercial developers and businesses evaluate expansion decisions based on trade areas that are analyzed by ZIP Codes; and

WHEREAS, Because the City of Eastvale does not have its own ZIP Code, its population demographics and economic data are inaccurately represented in various Geographic Information System (GIS) platforms that entities utilize to inform commercial attractiveness, insurance payment rates, and sales tax distribution decisions; and

WHEREAS, Eastvale residents and visitors experience navigational and mail delivery challenges because many addresses in the City of Eastvale are incorrectly identified as being located in Corona, Jurupa Valley, or Mira Loma; and

WHEREAS, Having an address improperly associated with another city has led to increased insurance rates for Eastvale residents due to being grouped with other jurisdictions; and

WHEREAS, Lack of a definitive ZIP Code causes confusion with voter registration, misdirected property, possible decreased sales tax revenue, and decreased property values because comparable sales are mixed with adjacent communities and are not exclusive to the City of Eastvale. Thus, the continuity of property values is disrupted; and

WHEREAS, The City of Eastvale is also concerned about possible delays in response efforts in the event of large-scale emergencies such as wildfires, which have become fairly common; and

WHEREAS, Eastvale residents eligibility for sport league participation is impacted because many associations and sport entities set team limits and restrictions based on ZIP Codes; and

WHEREAS, The City of Eastvales independent ZIP Code advocacy efforts have been widely supported by local governments and community organizations, including the City of Chino, the City of Corona, the City of Norco, the City of Ontario, the Chino Valley Chamber of Commerce, the Eastvale Chamber of Commerce, the Eastvale Chinese American Association, the Eastvale Kiwanis Club, and Norco College; and

WHEREAS, Granting the City of Eastvale a new and independent ZIP Code would address its emergency management, public safety, business attraction and retention, and insurance coverage challenges caused by factors that are outside of its control; now, therefore, be it

Resolved by the Senate and the Assembly of the State of California, jointly, That the Legislature urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code; and be it further

Resolved, That the Secretary of the Senate transmit copies of this resolution to the President and the Vice President of the United States, to the Speaker of the House of Representatives, to the Minority Leader of the House of Representatives, to the Majority Leader of the United States Senate, to the Minority Leader of the United States Senate, to each Senator and Representative from California in the Congress of the United States, and to the author for appropriate distribution.

WHEREAS, The City of Eastvale was incorporated on October 1, 2010. Located in the County of Riverside, before incorporation Eastvale was predominantly dairy farms and agricultural land; and

WHEREAS, The United States Postal Service uses Zone Improvement Plan Codes, commonly known as ZIP Codes, to route mail and deliver packages. ZIP Codes assist the United States Postal Service in meeting its obligation to provide quality mail delivery to the American public at reasonable prices; and

WHEREAS, The City of Eastvale shares the ZIP Code 91752 with the City of Jurupa Valley. The ZIP Code is coded as the former Mira Loma community, which was annexed by the Cities of Eastvale and Jurupa Valley. Additionally, the City of Eastvale also shares the ZIP Code 92880 with the City of Corona; and

WHEREAS, The City of Eastvale has grown exponentially in the last two decades and currently has an estimated population of over 70,000, according to 2023 census information; and

WHEREAS, Since its incorporation, the City of Eastvale has experienced various challenges because it shares ZIP Codes with neighboring jurisdictions; and

WHEREAS, It is difficult for certain businesses to expand in the City of Eastvale because commercial developers and businesses evaluate expansion decisions based on trade areas that are analyzed by ZIP Codes; and

WHEREAS, Because the City of Eastvale does not have its own ZIP Code, its population demographics and economic data are inaccurately represented in various Geographic Information System (GIS) platforms that entities utilize to inform commercial attractiveness, insurance payment rates, and sales tax distribution decisions; and

WHEREAS, Eastvale residents and visitors experience navigational and mail delivery challenges because many addresses in the City of Eastvale are incorrectly identified as being located in Corona, Jurupa Valley, or Mira Loma; and

WHEREAS, Having an address improperly associated with another city has led to increased insurance rates for Eastvale residents due to being grouped with other jurisdictions; and

WHEREAS, Lack of a definitive ZIP Code causes confusion with voter registration, misdirected property, possible decreased sales tax revenue, and decreased property values because comparable sales are mixed with adjacent communities and are not exclusive to the City of Eastvale. Thus, the continuity of property values is disrupted; and

WHEREAS, The City of Eastvale is also concerned about possible delays in response efforts in the event of large-scale emergencies such as wildfires, which have become fairly common; and

WHEREAS, Eastvale residents eligibility for sport league participation is impacted because many associations and sport entities set team limits and restrictions based on ZIP Codes; and

WHEREAS, The City of Eastvales independent ZIP Code advocacy efforts have been widely supported by local governments and community organizations, including the City of Chino, the City of Corona, the City of Norco, the City of Ontario, the Chino Valley Chamber of Commerce, the Eastvale Chamber of Commerce, the Eastvale Chinese American Association, the Eastvale Kiwanis Club, and Norco College; and

WHEREAS, Granting the City of Eastvale a new and independent ZIP Code would address its emergency management, public safety, business attraction and retention, and insurance coverage challenges caused by factors that are outside of its control; now, therefore, be it

Resolved by the Senate and the Assembly of the State of California, jointly, That the Legislature urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code; and be it further

Resolved, That the Secretary of the Senate transmit copies of this resolution to the President and the Vice President of the United States, to the Speaker of the House of Representatives, to the Minority Leader of the House of Representatives, to the Majority Leader of the United States Senate, to the Minority Leader of the United States Senate, to each Senator and Representative from California in the Congress of the United States, and to the author for appropriate distribution.

Date of Hearing: June 3, 2026

ASSEMBLY COMMITTEE ON LOCAL GOVERNMENT

Juan Carrillo, Chair

SBPCA Bill Id:SJR 11

Author:(Cervantes) – As Introduced Ver:January 13, 2026

SENATE VOTE: 37-0

SUBJECT: The City of Eastvale: ZIP Code.

SUMMARY: This resolution urges the President of the United State to sign, and the United State Congress to approve, legislation that would authorize Eastvale to be assigned an independent ZIP code. Specifically, this measure:

1. States that Eastvale was incorporated on October 1, 2010. Located in the County of Riverside, before incorporation Eastvale was predominately dairy farms and agricultural land.
   
2. States that the United States Postal Service (USPS) uses ZIP Codes to route mail and deliver packages. ZIP Codes assist the USPS in meeting its obligation to provide quality mail delivery to the American public at reasonable prices.
   
3. States that Eastvale shares the ZIP Code 91752 with the City of Jurupa Valley. The ZIP Code is coded as the former Mira Loma community, which was annexed by Eastvale and the City of Jurupa Valley. Additionally, Eastvale also shares the ZIP Code 92880 with the City of Corona.
   
4. States that Eastvale has grown exponentially in the last two decades and currently has a population of over 70,000 according to 2023 census information.
   
5. States that since its incorporation, Eastvale has experienced various challenges because it shares ZIP Codes with neighboring jurisdictions.
   
6. States that it is difficult for certain businesses to expand in Eastvale because commercial developers and businesses evaluate expansion decisions based on trade areas that are analyzed by ZIP Codes.
   
7. States that because Eastvale does not have its own ZIP Code, its population demographics and economic data are inaccurately represented in various Geographic Information System (GIS) platforms that entities utilize to inform commercial attractiveness, insurance payment rates, and sales tax distribution decisions.
   
8. States that Eastvale residents and visitors experience navigational and mail delivery challenges because many addresses in Eastvale are incorrectly identified as being located in Corona, Jurupa Valley, or Mira Loma.
   
9. States that having an address improperly associated with another city has led to increased insurance rates for Eastvale residents due to being grouped with other jurisdictions.
   
10. States that a lack of a definitive ZIP Code causes confusion with voter registration, misdirected property, possible decreased sales tax revenue, and decreased property values because comparable sales are mixed with adjacent communities and are not exclusive to Eastvale. Thus, the continuity of property values is disrupted.
    
11. States that Eastvale is also concerned about possible delays in response efforts in the event of large-scale emergencies such as wildfires, which have become fairly common.
    
12. States that Eastvale residents’ eligibility for sport league participation is impacted because many associations and sport entities set team limits and restrictions based on ZIP Codes.
    
13. States that Eastvale’s independent ZIP Code advocacy efforts have been widely supported by local governments and community organizations, including the City of Chino, the City of Corona, the City of Norco, the City of Ontario, the Chino Valley Chamber of Commerce, the Eastvale Chamber of Commerce, the Eastvale Chinese American Association, the Eastvale Kiwanis Club, and Norco College.
    
14. States that granting Eastvale a new and independent ZIP Code would address its emergency management, public safety, business attraction and retention, and insurance coverage challenges caused by factors that are outside of its control.
    
15. Resolves by the Senate and the Assembly of the State of California, jointly, that the Legislature urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize Eastvale to be assigned an independent ZIP Code.
    
16. Resolves that the Secretary of the Senate transmit copies of this resolution to the President and the Vice President of the United States, to the Speaker of the House of Representatives, to the Minority Leader of the House of Representatives, to the Majority Leader of the United States Senate, to the Minority Leader of the Unites State Senate, to each Senator and Representative from California in the Congress of the United States, and to the author for appropriate distribution.
    

FISCAL EFFECT: None.

COMMENTS:

1. Bill Summary and Author’s Statement. This resolution urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize Eastvale to be assigned an independent ZIP code. This resolution is sponsored by the author.
   

According to the author, “With nearly 70,000 residents as of the 2020 Census, Eastvale has become one of the fastest-growing cities in California. The lack of an independent ZIP code for the City of Eastvale has led not only to chronic mail delivery issues—affecting timely legal notices, code enforcement activities, and important public outreach efforts—but has also caused challenges in emergency management, business attraction and retention, and insurance coverage. In many instances in which an Eastvale resident’s or small business’s address is improperly associated with another jurisdiction, the lack of an independent ZIP code has led to higher auto insurance rates or the loss of home insurance coverage due to wildfires in neighboring cities. Without having an independent ZIP code of their own, the City of Eastvale has seen their community identity, economic culture, and quality of life all negatively affected. Senate Joint Resolution 11 calls upon the President of the United States and Congress to enact legislation that would provide the City of Eastvale with its own, independent ZIP code.”

1. Arguments in Support. According to Eastvale, “Eastvale was incorporated on October 1, 2010, and has grown exponentially in the last two decades to an estimated population of over 70,000, according to 2023 census information. However, Eastvale currently shares ZIP Code 91752 with the City of Jurupa Valley (coded as the former Mira Loma community) and shares ZIP Code 92880 with the City of Corona. As described in SJR 11, sharing ZIP Codes with neighboring jurisdictions has created significant challenges for our residents, businesses, and the City as a whole.

“The City is concerned about possible delays in response efforts during large-scale emergencies such as wildfires, and shared ZIP Codes can compound jurisdictional confusion when resources and information are routed by ZIP Code. Additionally, without its own ZIP Code, Eastvale’s demographics and economic data can be inaccurately represented in GIS and other platforms used to inform commercial attractiveness, insurance rates, and sales tax distribution decisions.

“This confusion can extend to Navigational and mail delivery issues: residents and visitors experience navigation and mail delivery challenges because many Eastvale addresses are incorrectly identified as being located in Corona, Jurupa Valley, or Mira Loma.

“The City of Eastvale has long advocated for a ZIP Code that accurately reflects our community and supports efficient delivery of public services. Granting Eastvale a new, independent ZIP Code would directly address these challenges caused by factors outside of the City’s control. For these reasons, we are pleased to support SJR 11 and thank you for your leadership on this most important issue.”

1. Arguments in Opposition. None on file.
   

REGISTERED SUPPORT / OPPOSITION:

Support

City of Eastvale

Opposition

None on file

Analysis Prepared by: Jimmy MacDonald / L. GOV. / (916) 319-3958

 CONSENT  

Bill No: SJR 11

Author: Cervantes (D)

Introduced: 1/13/26

Vote: 21

SENATE LOCAL GOVERNMENT COMMITTEE: 7-0, 3/18/26

AYES: Durazo, Choi, Arreguín, Ashby, Cervantes, Laird, Seyarto

SUBJECT: The City of Eastvale: ZIP Code

SOURCE: Author

DIGEST:

This joint resolution urges Congress and the President to authorize the granting of a new and independent ZIP Code to the City of Eastvale in Riverside County.

ANALYSIS:

Existing federal law, under the Postal Reorganization Act of 1970 (Pub. L. 91-375, 84 Stat. 719), establishes the United States Postal Service (USPS) as an independent entity within the executive branch of the federal government to provide for the administration of postal programs and operations.

This joint resolution:

1. Urges the President of the United States to sign, and the United States Congress to approve, legislation that would authorize the City of Eastvale to be assigned an independent ZIP Code.
2. Makes several findings and declarations supporting its purposes.
3. Directs the Secretary of the Senate to transmit copies of the resolution, for appropriate distribution, to:
   1. The President and the Vice President of the United States;
   2. The Speaker and Minority Leader of the House of Representatives;
   3. The Majority Leader and Minority Leader of the United States Senate;
   4. Each Senator and Representative from California in the Congress of the United States; and
   5. The author of SJR 11.

Background

Postal ZIP codes. The U.S. Postal Service (USPS) began dividing large cities into delivery zones in 1943. 20 years later, in response to increased mail volume, USPS introduced nationwide five-digit Zone Improvement Plan (ZIP) codes to improve the efficiency of mail sorting and delivery. These codes corresponded to the post offices where final sorting of mail was done and from which letter carriers were dispatched to make deliveries. Mass mailings were first required to use ZIP codes in 1967 and today their use is ubiquitous. There are currently 41,552 ZIP codes in the U.S. This number fluctuates.

The ZIP code provides the basis for the automated sorting of nearly all mail. The first number of a ZIP code represents a broad geographic area, moving from “0” for places in the East to “9” for locations in the West.  The next two numbers represent regional areas, while the fourth and fifth digits route the mail to specific post offices. The USPS added the four final ZIP code numbers (ZIP+4) in 1983 to allow mail to be further sorted by block, street, or building.

ZIP codes are easily accessible public information and, as such, various entities use them for purposes unrelated to mail delivery. For instance, researchers turn to ZIP codes to collect demographic data and auto insurance companies determine premiums based, in part, on traffic statistics within a customer’s ZIP code.

Postal vs. municipal boundaries. A 2006 Congressional Research Service (CRS) Report, “Changing Postal ZIP Code Boundaries,” states that, because ZIP codes are based on mail routes and delivery points, they often do not correspond to political or municipal jurisdiction boundaries. This means millions of households, particularly those in rapidly growing suburban areas, receive their mail from a post office in an adjacent town or neighborhood and their mailing address reflects the name and ZIP code of that post office rather than the jurisdiction where they actually live. The CRS states that problems can arise when mailing addresses do not align with the actual towns or cities of residence, including higher automobile insurance rates for drivers who live in suburban areas but are charged city rates based on their ZIP codes; confusion about where residents should vote in municipal elections because they do not distinguish between voting and mailing addresses; misdirecting of sales tax revenue collected by businesses with ZIP codes in overlapping jurisdictions; the mailing of jury duty notices to persons who are ultimately not eligible to serve based on their actual residence; potential delays in emergency service response times because of confusion over what city a call comes from if it has shared ZIP codes; and a lack of community identity associated with the required use of mailing addresses in neighboring jurisdictions.

USPS boundary review process. USPS’s policies to consider and, if possible, accommodate requests to modify ZIP code boundaries or change the last lines of an address, such as the city or town name, are outlined in its “Management Instruction: ZIP Code Boundary Review Process” document that it published in 2016. Any municipality or community group seeking a ZIP code change must submit the request in writing to the USPS district manager who is responsible for the area, along with any rationale and justification. According to USPS, the requested boundary should be consistent with the actual municipal boundary and identity of the affected area. The documented endorsement of the request by local government officials is strongly recommended to help ensure that the interests of the affected communities are represented fairly and are reflective of long-term municipal planning.

USPS generally limits its consideration of these requests to factors that involve mail delivery, but will reasonably consider factors related to community identity, particularly if the request is from an undeveloped or newly developed area. However, USPS policy states that it will not review boundary review requests more frequently than once every ten years.

When a request is received, the district manager must identify its feasibility based on internal and external factors, including:

• Whether the requested boundary is cohesive and manageable for mail delivery;
• If the revised or new boundary would create duplicate street addresses within a single ZIP code;
• If existing facilities can accommodate the change; and
• How the change might impact timeliness of mail delivery and customer satisfaction.

If the request is deemed to be feasible, USPS then conducts a survey of the customers who would be affected by the proposed ZIP code boundary change. A simple majority of survey respondents must indicate their support in order for USPS to proceed with implementing the change. The boundary review process also includes procedures that are in place for customers to appeal to USPS headquarters if the request is denied.

City of Eastvale. Eastvale was formally incorporated in 2010 and is located in Riverside County’s Inland Empire region of Southern California. Once a rural area primarily comprised of dairy farms and agricultural land, Eastvale began to suburbanize in the 1990s as more families from Los Angeles and Orange counties moved there seeking affordability. Today it has a population of approximately 71,000 residents and covers about 13 square miles. Eastvale is surrounded by the cities of Jurupa Valley, Corona, Chino, Ontario, and Norco. Currently, Eastvale shares two ZIP codes: 91752 with the City of Jurupa Valley and 92880 with the City of Corona.

The City is concerned that the sharing of ZIP codes with neighboring cities has caused frustrating challenges for the community, including mail delivery disruptions, difficulty attracting and retaining business development, confusion with voter registration and elections, miscalculated or restricted insurance rates, particularly for residents living in fire-prone areas, and interference with emergency response activities. The City wants the Legislature to urge the federal government to authorize a new ZIP Code to be assigned specifically to the City.

Comments

Purpose of the bill. According to the author, “With nearly 70,000 residents as of the 2020 Census, Eastvale has become one of the fastest-growing cities in California. The lack of an independent ZIP code for the City of Eastvale has led not only to chronic mail delivery issues—affecting timely legal notices, code enforcement activities, and important public outreach efforts—but has also caused challenges in emergency management, business attraction and retention, and insurance coverage. In many instances in which an Eastvale resident’s or small business’s address is improperly associated with another jurisdiction, the lack of an independent ZIP code has led to higher auto insurance rates or the loss of home insurance coverage due to wildfires in neighboring cities. Without having an independent ZIP code of their own, the City of Eastvale has seen their community identity, economic culture, and quality of life all negatively affected. Senate Joint Resolution 11 calls upon the President of the United States and Congress to enact legislation that would provide the City of Eastvale with its own, independent ZIP code.”

Try, try again. Various local, state, and federal efforts to designate a unique ZIP code for Eastvale have occurred since Eastvale was incorporated in 2010. USPS first conducted a boundary review of Eastvale’s request in 2011 but denied the request, citing costs associated with additional daily mileage for mail carriers and adjusted delivery routes. In 2022, the City requested that USPS review the boundary again. USPS denied that request in December 2022, and Eastvale’s appeal of that decision was denied in June 2023. Two federal bills in 2023, H.R. 696 and H.R. 860, that would have required USPS to designate a single, unique ZIP Code for the City of Eastvale failed to advance through the U.S. Senate. However, effective January 1, 2024, USPS changed the official municipality designation for 92880 from “Corona” to “Eastvale.” As a result, Eastvale is now the recommended city designated for the 92880 ZIP code. Eastvale is also a recognized city name for addresses in the 91752 ZIP code. Legislative efforts continue: most recently, in July 2025, the U.S. House of Representatives passed a similar measure, H.R. 672. That measure is currently pending in the U.S. Senate. SJR 11 continues these efforts at the state level.

Related/Prior Legislation

SJR 3 (Roth, Resolution Chapter 105, Statutes of 2023), this joint resolution is nearly identical to SJR 3.

FISCAL EFFECT: Appropriation: No Fiscal Com.: No Local: No

SUPPORT: (Verified 3/19/26)

City of Eastvale

OPPOSITION: (Verified 3/19/26)

None received

Prepared by: Anton Favorini-Csorba / L. GOV. / (916) 651-4119

3/20/26 9:06:01

**** END ****

SENATE COMMITTEE ON LOCAL GOVERNMENT

Senator María Elena Durazo, Chair

2025 - 2026 Regular

The City of Eastvale: ZIP Code

Urges Congress and the President to authorize the granting of a new and independent ZIP Code to the City of Eastvale in Riverside County.

Background

Postal ZIP codes. The U.S. Postal Service (USPS) began dividing large cities into delivery zones in 1943. 20 years later, in response to increased mail volume, USPS introduced nationwide five-digit Zone Improvement Plan (ZIP) codes to improve the efficiency of mail sorting and delivery. These codes corresponded to the post offices where final sorting of mail was done and from which letter carriers were dispatched to make deliveries. Mass mailings were first required to use ZIP codes in 1967 and today their use is ubiquitous. There are currently 41,552 ZIP codes in the U.S. This number fluctuates.

The ZIP code provides the basis for the automated sorting of nearly all mail. The first number of a ZIP code represents a broad geographic area, moving from “0” for places in the East to “9” for locations in the West.  The next two numbers represent regional areas, while the fourth and fifth digits route the mail to specific post offices. The USPS added the four final ZIP code numbers (ZIP+4) in 1983 to allow mail to be further sorted by block, street, or building.

ZIP codes are easily accessible public information and, as such, various entities use them for purposes unrelated to mail delivery. For instance, researchers turn to ZIP codes to collect demographic data and auto insurance companies determine premiums based, in part, on traffic statistics within a customer’s ZIP code.

Postal vs. municipal boundaries. A 2006 Congressional Research Service (CRS) Report, “Changing Postal ZIP Code Boundaries,” states that, because ZIP codes are based on mail routes and delivery points, they often do not correspond to political or municipal jurisdiction boundaries. This means millions of households, particularly those in rapidly growing suburban areas, receive their mail from a post office in an adjacent town or neighborhood and their mailing address reflects the name and ZIP code of that post office rather than the jurisdiction where they actually live. The CRS states that problems can arise when mailing addresses do not align with the actual towns or cities of residence, including higher automobile insurance rates for drivers who live in suburban areas but are charged city rates based on their ZIP codes; confusion about where residents should vote in municipal elections because they do not distinguish between voting and mailing addresses; misdirecting of sales tax revenue collected by businesses with ZIP codes in overlapping jurisdictions; the mailing of jury duty notices to persons who are ultimately not eligible to serve based on their actual residence; potential delays in emergency service response times because of confusion over what city a call comes from if it has shared ZIP codes; and a lack of community identity associated with the required use of mailing addresses in neighboring jurisdictions.

USPS boundary review process. USPS’s policies to consider and, if possible, accommodate requests to modify ZIP code boundaries or change the last lines of an address, such as the city or town name, are outlined in its “Management Instruction: ZIP Code Boundary Review Process” document that it published in 2016. Any municipality or community group seeking a ZIP code change must submit the request in writing to the USPS district manager who is responsible for the area, along with any rationale and justification. According to USPS, the requested boundary should be consistent with the actual municipal boundary and identity of the affected area. The documented endorsement of the request by local government officials is strongly recommended to help ensure that the interests of the affected communities are represented fairly and are reflective of long-term municipal planning.

USPS generally limits its consideration of these requests to factors that involve mail delivery, but will reasonably consider factors related to community identity, particularly if the request is from an undeveloped or newly developed area. However, USPS policy states that it will not review boundary review requests more frequently than once every ten years.

When a request is received, the district manager must identify its feasibility based on internal and external factors, including:

• Whether the requested boundary is cohesive and manageable for mail delivery;
• If the revised or new boundary would create duplicate street addresses within a single ZIP code;
• If existing facilities can accommodate the change; and
• How the change might impact timeliness of mail delivery and customer satisfaction.

If the request is deemed to be feasible, USPS then conducts a survey of the customers who would be affected by the proposed ZIP code boundary change. A simple majority of survey respondents must indicate their support in order for USPS to proceed with implementing the change.

The boundary review process also includes procedures that are in place for customers to appeal to USPS headquarters if the request is denied. Adverse decisions may be appealed except in cases where a potential ZIP code change was not implemented because a majority of affected customers did not support it in the survey.

According to USPS, alternative administrative solutions that do not involve changing its existing delivery structure, such as allowing customers in multiple communities that fall within a single ZIP code to use an alternative city name while keeping the same ZIP code, should be pursued to the extent reasonably practicable. USPS further states that a ZIP code boundary change should be considered only in cases where there is no reasonable administrative option.

City of Eastvale. Eastvale was formally incorporated in 2010 and is located in Riverside County’s Inland Empire region of Southern California. Once a rural area primarily comprised of dairy farms and agricultural land, Eastvale began to suburbanize in the 1990s as more families from Los Angeles and Orange counties moved there seeking affordability. Today it has a population of approximately 71,000 residents and covers about 13 square miles. Eastvale is surrounded by the cities of Jurupa Valley, Corona, Chino, Ontario, and Norco. Currently, Eastvale shares two ZIP codes: 91752 with the City of Jurupa Valley and 92880 with the City of Corona.

The City is concerned that the sharing of ZIP codes with neighboring cities has caused frustrating challenges for the community, including mail delivery disruptions, difficulty attracting and retaining business development, confusion with voter registration and elections, miscalculated or restricted insurance rates, particularly for residents living in fire-prone areas, and interference with emergency response activities. The City wants the Legislature to urge the federal government to authorize a new ZIP Code to be assigned specifically to the City.

Proposed Law

Senate Joint Resolution 11 urges the U.S. Congress to work with the President to authorize assigning the City of Eastvale an independent ZIP Code. The resolution makes several findings and declarations stating the consequences of sharing ZIP codes with other cities, including that demographics and economic data are inaccurately represented across various systems that rely on ZIP codes, which can negatively affect commercial attractiveness, insurance rates, mail delivery, and emergency response efforts.

SJR 11 directs the Secretary of the Senate to transmit copies of the resolution, for appropriate distribution, to:

• The President and the Vice President of the United States;
• The Speaker and Minority Leader of the House of Representatives;
• The Majority Leader and Minority Leader of the United States Senate;
• Each Senator and Representative from California in the Congress of the United States; and
• The author of SJR 11.

Comments

1. Purpose of the bill. According to the author, “With nearly 70,000 residents as of the 2020 Census, Eastvale has become one of the fastest-growing cities in California. The lack of an independent ZIP code for the City of Eastvale has led not only to chronic mail delivery issues—affecting timely legal notices, code enforcement activities, and important public outreach efforts—but has also caused challenges in emergency management, business attraction and retention, and insurance coverage. In many instances in which an Eastvale resident’s or small business’s address is improperly associated with another jurisdiction, the lack of an independent ZIP code has led to higher auto insurance rates or the loss of home insurance coverage due to wildfires in neighboring cities. Without having an independent ZIP code of their own, the City of Eastvale has seen their community identity, economic culture, and quality of life all negatively affected. Senate Joint Resolution 11 calls upon the President of the United States and Congress to enact legislation that would provide the City of Eastvale with its own, independent ZIP code.”

2. Try, try again? Various local, state, and federal efforts to designate a unique ZIP code for Eastvale have occurred since Eastvale was incorporated in 2010. USPS first conducted a boundary review of Eastvale’s request in 2011 but denied the request, citing costs associated with additional daily mileage for mail carriers and adjusted delivery routes. In 2022, the City requested that USPS review the boundary again. USPS denied that request in December 2022, and Eastvale’s appeal of that decision was denied in June 2023. Two federal bills in 2023, H.R. 696 and H.R. 860, that would have required USPS to designate a single, unique ZIP Code for the City of Eastvale failed to advance through the U.S. Senate. However, effective January 1, 2024, USPS changed the official municipality designation for 92880 from “Corona” to “Eastvale.” As a result, Eastvale is now the recommended city designated for the 92880 ZIP code. Eastvale is also a recognized city name for addresses in the 91752 ZIP code. Legislative efforts continue: most recently, in July 2025, the U.S. House of Representatives passed a similar measure, H.R. 672. That measure is currently pending in the U.S. Senate. SJR 11 continues these efforts at the state level.

3. Prior legislation. SJR 11 is nearly identical to SJR 3 (Roth, 2023).

Support and Opposition

(3/13/2026)

Support: City of Eastvale

Opposition: None Submitted

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