Buchanan County, Missouri ZIP Codes
- ZIP records
10 - Cities represented
6 - Sum of listed ZIP population estimates
73,921
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 64506 | Saint Joseph | 21,461 |
| 2 | 64507 | Saint Joseph | 13,991 |
| 3 | 64503 | Saint Joseph | 11,954 |
| 4 | 64501 | Saint Joseph | 10,689 |
| 5 | 64504 | Saint Joseph | 10,068 |
| 6 | 64401 | Agency | 1,757 |
| 7 | 64443 | Easton | 1,249 |
| 8 | 64484 | Rushville | 940 |
| 9 | 64448 | Faucett | 912 |
| 10 | 64440 | De Kalb | 900 |
Cities in Buchanan County
ZIP Directory
Browse all ZIP data for Missouri
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.