ZIP CodesZIP codes in Buchanan County, Missouri
Buchanan County, Missouri has 12 ZIP codes in this list, from 64401 to 64508. They cover 6 places, among them Saint Joseph, Agency, De Kalb and Easton.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 64401 | Agency | 37.1 | 39.666, -94.717 |
| 64440 | De Kalb | 36.2 | 39.583, -94.927 |
| 64443 | Easton | 48.6 | 39.752, -94.658 |
| 64448 | Faucett | 40.4 | 39.589, -94.791 |
| 64484 | Rushville | 72.7 | 39.565, -95.041 |
| 64501 | Saint Joseph | 3.7 | 39.769, -94.838 |
| 64502 | Saint Joseph | no area | 39.769, -94.847 |
| 64503 | Saint Joseph | 14.5 | 39.734, -94.817 |
| 64504 | Saint Joseph | 47.0 | 39.708, -94.868 |
| 64505 | Saint Joseph | 45.6 | 39.797, -94.844 |
| 64507 | Saint Joseph | 55.8 | 39.755, -94.817 |
| 64508 | Saint Joseph | no area | 39.676, -94.857 |
The ZIP code areas of Buchanan County add up to about 402 square miles of land (1,041 sq km) as the Census Bureau draws them. The largest is 64484 (Rushville), with 72.7 square miles.
Places with more than one code here: Saint Joseph (7 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Agency, MO 64401.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.