Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lansing | 1 | 111,964 | 112,566 | -0.14% | 2,857 | 39.2 | City |
| Delta charter township | 2 | 33,167 | 33,126 | 0.31% | 1,023 | 32.4 | Township |
| Charlotte | 3 | 9,225 | 9,291 | -0.18% | 1,430 | 6.5 | City |
| Grand Ledge | 4 | 7,780 | 7,794 | -0.05% | 2,019 | 3.9 | City |
| Windsor charter township | 5 | 7,142 | 7,138 | 0.08% | 207 | 34.5 | Township |
| Eaton Rapids | 6 | 5,150 | 5,209 | -0.29% | 1,418 | 3.6 | City |
| Eaton township | 7 | 3,988 | 3,998 | 0.03% | 125 | 32.0 | Township |
| Eaton Rapids township | 8 | 3,984 | 3,990 | 0.03% | 117 | 34.0 | Township |
| Oneida charter township | 9 | 3,945 | 3,986 | -0.3% | 122 | 32.3 | Township |
| Hamlin township | 10 | 3,231 | 3,226 | 0.12% | 94 | 34.3 | Township |
| Bellevue township | 11 | 3,190 | 3,202 | -0.06% | 88 | 36.4 | Township |
| Potterville | 12 | 3,103 | 3,057 | 0.36% | 1,777 | 1.7 | City |
| Carmel township | 13 | 2,829 | 2,838 | -0.03% | 83 | 34.0 | Township |
| Benton township | 14 | 2,761 | 2,764 | 0.07% | 82 | 33.5 | Township |
| Walton township | 15 | 2,288 | 2,293 | -0.04% | 65 | 35.2 | Township |
| Sunfield township | 16 | 2,038 | 2,042 | -0.05% | 56 | 36.1 | Township |
| Vermontville township | 17 | 1,948 | 1,948 | 0.1% | 54 | 36.1 | Township |
| Kalamo township | 18 | 1,771 | 1,766 | 0.11% | 48 | 36.6 | Township |
| Chester township | 19 | 1,758 | 1,766 | -0.11% | 49 | 36.0 | Township |
| Roxand township | 20 | 1,744 | 1,751 | -0.06% | 48 | 36.4 | Township |
| Brookfield township | 21 | 1,460 | 1,463 | 0% | 40 | 36.1 | Township |
| Bellevue | 22 | 1,335 | 1,347 | -0.22% | 1,313 | 1.0 | Village |
| Olivet | 23 | 1,290 | 1,516 | -4.23% | 1,265 | 1.0 | City |
| Dimondale | 24 | 1,168 | 1,175 | -0.17% | 1,312 | 0.9 | Village |
| Vermontville | 25 | 747 | 747 | 0% | 590 | 1.3 | Village |
| Mulliken | 26 | 544 | 548 | -0.18% | 521 | 1.0 | Village |
| Sunfield | 27 | 538 | 536 | 0% | 709 | 0.8 | Village |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Lansing is the largest city in Eaton County.
Sunfield is the smallest city in Eaton County.
There are 27 cities in Eaton County, Michigan.