7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48858 | Mount Pleasant | 42,226 |
| 48883 | Shepherd | 7,292 |
| 48893 | Weidman | 5,921 |
| 49310 | Blanchard | 3,183 |
| 48859 | Mount Pleasant | 2,228 |
| 48878 | Rosebush | 1,240 |
| 48896 | Winn | 226 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Isabella County, Michigan (US Census).