Missouri ZIP codes
Missouri holds 1,157 ZIP codes between 63005 and 72643. The tables rank the places and counties with the most codes; the guide below decodes the numbering.
Places with the most ZIP codes in Missouri
| Place | ZIP codes |
|---|---|
| Kansas City | 71 |
| Saint Louis | 68 |
| Springfield | 16 |
| Jefferson City | 11 |
| Columbia | 10 |
| Independence | 9 |
| Saint Joseph | 8 |
| Lees Summit | 7 |
| Joplin | 4 |
| Saint Charles | 4 |
| Ballwin | 4 |
| Florissant | 4 |
| Cape Girardeau | 3 |
| Blue Springs | 3 |
| Rolla | 3 |
| Chesterfield | 3 |
| Poplar Bluff | 2 |
| Liberty | 2 |
| Sedalia | 2 |
| O Fallon | 2 |
Missouri counties by ZIP count
| County | ZIP codes |
|---|---|
| Jackson | 75 |
| St. Louis | 52 |
| St. Louis (city) | 38 |
| Greene | 25 |
| Clay | 22 |
| Jefferson | 20 |
| Franklin | 19 |
| Jasper | 19 |
| Boone | 18 |
| Cole | 17 |
Reading a Missouri ZIP code
Missouri holds 1,157 ZIP codes between 63005 and 72643, spread over 115 counties. Kansas City leads the state with 71 codes, ahead of Saint Louis with 68. Every code here opens with digits 6 to 7: that opening number is the national postal region Missouri belongs to, the next two digits name the sectional center that sorts the mail, and the final two point to the local office. A ZIP+4 suffix narrows delivery to a block face. Boundaries follow carrier routes rather than city limits, which is why Kansas City spreads across 71 codes while some rural codes cross county lines.
Source: GeoNames postal dataset (CC BY 4.0), snapshot of 2026-07-09. Counts cover standard delivery ZIPs listed for Missouri; unique and PO box codes may add to these totals.
Last updated: · Methodology and sources