Eaton County, Michigan
County seat: Charlotte · Population 109,581 (2025) · 575 sq mi
Eaton County is the 19th most populous of Michigan's 83 counties, with 109,581 people (2025 estimate). Its county seat is Charlotte. It is part of the South Central (Region 7) region, one of the 10 Michigan prosperity regions. The map shows its 11 cities and towns and the 6 neighboring counties.
Eaton County facts
- County seat
- Charlotte
- Population (2025 estimate)
- 109,581 +0.4% since 2020
- Land area
- 575 sq mi 37th largest of 83
- Water area
- 4 sq mi
- Population density
- 191 per sq mi
- Established
- 1829
- Named after
- John Eaton American politician and diplomat (1790-1856)
- Largest city
- Delta 33,175
- Median household income
- $79,597
- Cities and towns
- 11 plus 1 CDPs
- ZIP codes
- 19
- Time zone
- Eastern
- FIPS code
- 26045
Cities and towns in Eaton County
Eaton County has 11 incorporated cities, towns and villages. Populations count the people living inside Eaton County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Charlotte (county seat) | City | 9,305 | |
| Grand Ledge | City | 7,853 | Clinton County |
| Eaton Rapids | City | 5,218 | |
| Lansing | City | 5,113 | Clinton and Ingham counties |
| Potterville | City | 3,135 | |
| Olivet | City | 1,525 | |
| Bellevue | Village | 1,348 | |
| Dimondale | Village | 1,183 | |
| Vermontville | Village | 754 | |
| Mulliken | Village | 550 | |
| Sunfield | Village | 543 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Waverly | 23,575 |
ZIP codes in Eaton County
19 ZIP codes reach into Eaton County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 48813 also Calhoun County
- 48821 also Ingham County
- 48827 also Ingham and Jackson counties
- 48837 also Clinton and Ionia counties
- 48842 also Ingham County
- 48849 also Ionia and Barry counties
- 48861 also Ionia County
- 48876
- 48890 also Ionia County
- 48897 also Barry County
- 48906 also Clinton and Ingham counties
- 48911 also Ingham County
- 48917 also Ingham County
- 49021 also Barry and Calhoun counties
- 49073 also Barry County
- 49076 also Calhoun County
- 49096
- 49264 also Ingham and Jackson counties
- 49284 also Jackson and Calhoun counties
Population of Eaton County, 2020–2025
Eaton County grew by 393 people (+0.4%) between April 2020 and July 2025: 1,070 more deaths than births and a net gain of 1,463 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 109,174 |
| 2021 | 108,866 |
| 2022 | 108,864 |
| 2023 | 108,915 |
| 2024 | 109,180 |
| 2025 | 109,581 |
Neighboring counties
- Barry County west · 63,991 people
- Ingham County east · 289,709 people
- Calhoun County south · 133,408 people
- Ionia County northwest · 66,557 people
- Clinton County northeast · 80,432 people
- Jackson County southeast · 159,552 people
Printable Eaton County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (147 KB)
- PNG (2400 px) (72 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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