7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48858 | Mount Pleasant | 43,036 |
| 48883 | Shepherd | 6,692 |
| 48893 | Weidman | 5,274 |
| 49310 | Blanchard | 2,952 |
| 48859 | Mount Pleasant | 2,395 |
| 48878 | Rosebush | 1,510 |
| 48896 | Winn | 268 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Isabella County, Michigan (US Census).