11 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 48917 | Lansing | 32,483 |
| 48813 | Charlotte | 20,564 |
| 48837 | Grand Ledge | 19,947 |
| 48827 | Eaton Rapids | 15,831 |
| 48821 | Dimondale | 6,327 |
| 49021 | Bellevue | 6,319 |
| 48876 | Potterville | 4,360 |
| 49076 | Olivet | 4,294 |
| 49096 | Vermontville | 3,305 |
| 48890 | Sunfield | 2,055 |
| 48861 | Mulliken | 1,774 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 11 ZCTAs in Eaton County, Michigan (US Census).