ZIP codes by state and county
The 50 states and DC have 33,642 ZIP codes with an area of their own. 9,399 of them cross a county line and 117 cross a state line. Pick a state to see its counties, or one of the 538 most populous counties.
By the All Map Tools Team
Any county or city, in the tool- ZIP codes
- 33,642
- ZCTAs in the 50 states and DC
- Cross a county line
- 9,399
- 1% or more of their land in another county
- Cross a state line
- 117
- 1% or more of their land in another state
- State with the most
- 1,992
- Texas
- County with the most
- 301
- Los Angeles County, CA
- Counties
- 3,144
- 538 with a page of their own (120,000 people or more)
ZIP codes by state
| State | ZIP codes | Counties | Cross a county line |
|---|---|---|---|
| Alabama | 656 | 67 | 234 |
| Alaska | 245 | 30 | 12 |
| Arizona | 420 | 15 | 48 |
| Arkansas | 619 | 75 | 226 |
| California | 1,808 | 58 | 152 |
| Colorado | 530 | 64 | 147 |
| Connecticut | 288 | 9 | 11 |
| Delaware | 68 | 3 | 6 |
| District of Columbia | 57 | 1 | 0 |
| Florida | 1,013 | 67 | 122 |
| Georgia | 752 | 159 | 367 |
| Hawaii | 97 | 5 | 0 |
| Idaho | 286 | 44 | 78 |
| Illinois | 1,397 | 102 | 465 |
| Indiana | 807 | 92 | 333 |
| Iowa | 972 | 99 | 455 |
| Kansas | 710 | 105 | 326 |
| Kentucky | 782 | 120 | 269 |
| Louisiana | 540 | 64 | 134 |
| Maine | 427 | 16 | 17 |
| Maryland | 478 | 24 | 77 |
| Massachusetts | 539 | 14 | 15 |
| Michigan | 992 | 83 | 325 |
| Minnesota | 887 | 87 | 341 |
| Mississippi | 427 | 82 | 217 |
| Missouri | 1,040 | 115 | 449 |
| Montana | 373 | 56 | 121 |
| Nebraska | 592 | 93 | 284 |
| Nevada | 182 | 17 | 25 |
| New Hampshire | 247 | 10 | 9 |
| New Jersey | 598 | 21 | 58 |
| New Mexico | 378 | 33 | 78 |
| New York | 1,826 | 62 | 297 |
| North Carolina | 853 | 100 | 297 |
| North Dakota | 399 | 53 | 190 |
| Ohio | 1,233 | 88 | 424 |
| Oklahoma | 666 | 77 | 256 |
| Oregon | 430 | 36 | 84 |
| Pennsylvania | 1,833 | 67 | 334 |
| Rhode Island | 81 | 5 | 1 |
| South Carolina | 424 | 46 | 152 |
| South Dakota | 397 | 66 | 216 |
| Tennessee | 639 | 95 | 284 |
| Texas | 1,992 | 254 | 652 |
| Utah | 303 | 29 | 29 |
| Vermont | 265 | 14 | 32 |
| Virginia | 904 | 133 | 291 |
| Washington | 606 | 39 | 81 |
| West Virginia | 740 | 55 | 169 |
| Wisconsin | 783 | 72 | 295 |
| Wyoming | 180 | 23 | 33 |
Counties with the most ZIP codes
- Los Angeles County, CA 301
- Cook County, IL 177
- Harris County, TX 142
- Maricopa County, AZ 140
- Allegheny County, PA 117
- San Diego County, CA 116
- Suffolk County, NY 108
- San Bernardino County, CA 98
- Dallas County, TX 93
- Orange County, CA 90
- King County, WA 89
- Worcester County, MA 87
- Westmoreland County, PA 87
- Middlesex County, MA 83
- Miami-Dade County, FL 81
- Bexar County, TX 78
- Westchester County, NY 77
- Clark County, NV 76
- Tarrant County, TX 76
- Riverside County, CA 74
- Capitol Planning Region, CT 72
- Erie County, NY 72
- Oakland County, MI 71
- Hennepin County, MN 71
- Wayne County, MI 70
- Nassau County, NY 70
- New York County, NY 70
- Montgomery County, PA 70
- Queens County, NY 68
- Bergen County, NJ 66
Sources
- U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
- U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
- U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.
How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.