10 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 49091 | Sturgis | 19,337 |
| 49093 | Three Rivers | 18,433 |
| 49099 | White Pigeon | 5,942 |
| 49042 | Constantine | 4,564 |
| 49040 | Colon | 3,384 |
| 49032 | Centreville | 3,287 |
| 49072 | Mendon | 2,937 |
| 49030 | Burr Oak | 2,650 |
| 49066 | Leonidas | 720 |
| 49075 | Nottawa | 182 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 10 ZCTAs in St. Joseph County, Michigan (US Census).