S-4505-119
Read twice and referred to the Committee on Homeland Security and Governmental Affairs.
Sponsored by Joni Ernst (R-IA)
What it does
This bill would require the United States Postal Service to designate a single, unique ZIP Code for each of 75 named communities across 20 states within one year of enactment. Currently, many of these communities share ZIP Codes with neighboring areas or lack a ZIP Code that corresponds to their municipal boundaries. The bill does not appropriate funds or set postal rates.
Who benefits
Residents and businesses in the 75 named communities who would gain a ZIP Code that matches their actual location — improving mail delivery accuracy and reducing misrouted packages. Local governments in these communities that rely on ZIP Code-based data for emergency services, census reporting, and grant eligibility. Real estate professionals and title companies whose property records depend on accurate geographic identifiers. E-commerce businesses and logistics companies that route deliveries by ZIP Code. Community identity advocates who argue a distinct ZIP Code reflects recognized municipal status.
Who is hurt
The USPS, which would bear the administrative and operational costs of redesignating ZIP Code boundaries, updating routing systems, and notifying affected parties — without any appropriation provided in the bill. Residents and businesses in adjacent communities whose ZIP Code boundaries may be redrawn, potentially requiring address changes. Mail carriers and postal workers who would need to learn new route assignments. Database and software vendors who maintain ZIP Code records and would need to update their systems. Communities not named in the bill that share similar ZIP Code ambiguity issues but receive no relief.
Supporters argue
Supporters argue that mismatched ZIP Codes create real, documented harms: residents of unrecognized communities are denied access to location-based services, misidentified in emergency dispatch systems, and excluded from federal grant programs that use ZIP Codes as eligibility proxies. They contend that a unique ZIP Code is a basic infrastructure need for any functioning community, and that Congress has both the authority and the responsibility to direct USPS — a federal entity — to correct these longstanding administrative gaps for communities that have grown significantly in population.
Opponents argue
Opponents argue that ZIP Code assignments are an operational matter best left to USPS, which has established technical processes for evaluating and granting new designations, and that congressional mandates for specific communities bypass that process without any cost analysis or operational review. They contend that the bill creates an unfunded mandate — requiring USPS, which already operates at a financial deficit, to absorb redesignation costs — and sets a precedent for Congress to micromanage postal logistics for politically connected communities while thousands of similarly situated communities receive no action.