National rankings · ACS 5-Year
U.S. ZIP Code Rankings by State
Every state ranked by total ZIP-area population and by ZIP-code count, computed live from ZIP-level Census data, no hand-curated lists.
- 33,099
- ZIP codes ranked
- 52
- States + territories
- Texas
- Most ZIPs (1,935)
The verdict
ZIP coverage tracks delivery geography, not population: Texas leads with 1,935 ZIP codes, and just three states hold roughly 17% of every ZIP in the country, while California tops the population ranking.
- Texas
- most ZIPs (1,935)
- California
- most people (37,249,464)
- 17%
- of all ZIPs in the top 3 states
- 312,447,629
- people across all ZIPs
Coverage follows USPS delivery routes, one ZCTA per delivery cluster, so geographically broad states lead by count even where populations don't.
According to the U.S. Census Bureau American Community Survey (2019–2023 5-Year Estimates), the United States spans 33,099 ZIP Code Tabulation Areas across 52 states and territories, home to roughly 312,447,629 residents. PlainZIP aggregates every ZIP-level record into the state rankings below, every row reflects the current dataset query, not a hand-curated list. See our methodology for how ZIP-level Census data is rolled up into state totals. Data refreshed March 2026.
Top 25 states by total ZIP-area population
Top 25 states by ZIP-code count
Source: U.S. Census Bureau ACS 5-Year Estimates (2023) and HUD-USPS ZIP crosswalk. Verify with HUD →