ZIPs by City Name

Searching for ZIP codes by city name is the most intuitive way to find ZIP codes when you know the place name but not the specific ZIP code. Our ZIPs by City Name tool searches the complete USPS city name database — covering all preferred city names and acceptable alternate city names across all 42,000+ active US ZIP codes — and returns every matching ZIP code with its state, county, and type. Whether you are looking for all ZIP codes in a specific city, exploring which states have cities with a common name, or building a geographic filter based on community names, this tool provides immediate, comprehensive results.

How City Name Search Works

The search queries the USPS Address Management System city name index, which contains both preferred city names (one per ZIP) and acceptable alternate city names (multiple per ZIP). For each entered city name, the database returns all ZIP codes for which that city name is either the preferred designation or an acceptable alternate. Results include the ZIP code, the matching city name, whether it is the preferred or alternate name, the state, county, and ZIP type.

Search is case-insensitive and supports partial matching. Searching for "Spring" returns results including Springfield, Spring Hill, Spring Grove, Spring City, and any other city name starting with or containing "Spring." This partial matching is useful when you are not sure of the exact spelling or want to explore all ZIP codes in a city-name family.

The Duplicate City Name Problem

The United States has an extraordinary number of duplicate city names across states — a direct result of English-speaking settlers naming new towns after familiar places back home (hence the abundance of cities named after British towns like Springfield, Chester, and Rochester) and after patriotic figures (Washington, Franklin, Madison, Jefferson, Lincoln). The most duplicated city name in the US is Springfield, which appears in 34 different states. Franklin appears in 28 states. Clinton and Madison each appear in over 20 states.

This duplication means that searching for "Springfield" without a state returns dozens of results across 34 states. The ZIP codes for Springfield, Illinois (62701–62711) are entirely different from Springfield, Massachusetts (01101–01108), Springfield, Ohio (45501–45506), and Springfield, Missouri (65801–65810). Each of these is a distinct urban area with its own set of ZIP codes, demographics, and geographic context.

Always Include the State When Possible

For most practical applications, a city name search should include the state to return the right set of ZIP codes. The combination of city name + state narrows the results from dozens of states down to the ZIP codes for one specific place. Our tool accepts both open city name searches (returns all matches nationwide) and city + state searches (returns only matches in the specified state).

City Names That Are Alternate, Not Preferred

Some searches return ZIP codes where the queried city name is an acceptable alternate rather than the preferred city name. For example, searching for "East Los Angeles" returns ZIP codes where USPS recognizes "East Los Angeles" as an acceptable alternate mailing name, even though the preferred city designation for those ZIPs may be "Los Angeles." These results are included because USPS will deliver mail addressed to "East Los Angeles" at those ZIP codes.

For data normalization purposes, after finding ZIP codes via alternate city name, always retrieve the preferred city name for each ZIP to ensure consistent data representation across your dataset.

Using City Name Search for Geographic Data Enrichment

Marketing analysts who receive data files with city names but no ZIP codes can use city-name-to-ZIP search as the first step in address enrichment. The process: (1) extract unique city names from the dataset; (2) search each city name (paired with state if available) to get candidate ZIP codes; (3) for cities that match multiple ZIP codes, apply secondary matching logic (partial street address, county, or area code) to select the most likely ZIP; (4) append the selected ZIP to each record.

This approach works well for data with consistent city names. For data with typos, abbreviations, or informal community names, CASS-certified address standardization software provides more robust matching.

Exploring ZIP Code Geography Through City Name Search

City name search is also a useful geographic exploration tool. Searching for "Beach" returns ZIP codes for dozens of coastal communities across the US — Virginia Beach, Myrtle Beach, Long Beach, Huntington Beach, Daytona Beach — providing an interesting geographic survey of beach communities and their postal geography. Searching for "Heights" surfaces dozens of elevated neighborhoods in cities that use "Heights" to denote a distinct community identity. This kind of exploratory search is useful for researchers studying place names, regional naming patterns, or the geography of specific community types.

Partial City Name Matching for Flexible Search

The partial match capability allows flexible search when the exact city name is uncertain. A user looking for ZIP codes in communities near Fort Collins, Colorado might search "Fort C" and see Fort Collins, Fort Collins (campus ZIPs), Fort Lupton, and other nearby Fort-prefixed communities. This flexibility reduces the frustration of exact-match-only systems where minor spelling variations produce no results.

City Name Search for Multilingual and Historical Address Research

Some US cities have both English and Spanish names, or English and Native American names, that are used interchangeably by community members. USPS acceptable city name lists sometimes include both forms. A search for "Albuquerque" versus historical Spanish variants will demonstrate whether both are in the USPS database. Similarly, some Puerto Rico city names appear in both Spanish and anglicized forms. Our city name search covers all USPS-recognized city name variants regardless of language.

Building Geo-Targeted Ad Campaigns by City Name

Digital advertisers can use city name ZIP search to build geographic targeting lists. Find all ZIP codes for a city, combine with population data to calculate total addressable audience, and import the ZIP list into Google Ads, Meta Ads, or programmatic platforms for city-level targeting. This approach is more precise than the platform own city-level targeting, which may use overly broad boundaries, and ensures every ZIP code serving the city is included.