11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48917 | Lansing | 32,379 |
| 48813 | Charlotte | 20,165 |
| 48837 | Grand Ledge | 19,913 |
| 48827 | Eaton Rapids | 15,999 |
| 49021 | Bellevue | 6,339 |
| 48821 | Dimondale | 6,127 |
| 48876 | Potterville | 4,602 |
| 49076 | Olivet | 4,112 |
| 49096 | Vermontville | 2,976 |
| 48890 | Sunfield | 1,976 |
| 48861 | Mulliken | 1,839 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Eaton County, Michigan (US Census).