11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48917 | Lansing | 32,029 |
| 48813 | Charlotte | 20,263 |
| 48837 | Grand Ledge | 19,822 |
| 48827 | Eaton Rapids | 16,070 |
| 49021 | Bellevue | 6,467 |
| 48821 | Dimondale | 6,180 |
| 48876 | Potterville | 4,301 |
| 49076 | Olivet | 4,255 |
| 49096 | Vermontville | 3,196 |
| 48890 | Sunfield | 1,967 |
| 48861 | Mulliken | 1,852 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Eaton County, Michigan (US Census).