County · Missouri · United States
Buchanan County ZIP codes
10 ZIP codes · 6 cities · FIPS 29021
Key facts
- State
- Missouri (MO)
- FIPS code
- 29021
- Population
- 83,855
- Median household income
- $59,423
- Median age
- 38.9
- Land area
- 408.2 sq mi (1,057.4 km²)
- Population density
- 205 / sq mi
- Area codes
- 816, 975
Cities and ZIP codes in Buchanan County (6)
| City | ZIP codes |
|---|---|
| Saint Joseph | 64501, 64503, 64504, 64505, 64507 |
| Agency | 64401 |
| De Kalb | 64440 |
| Easton | 64443 |
| Faucett | 64448 |
| Rushville | 64484 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.