Dayton Metro Area Counties
3 counties · 826,554 people (2025) · 1,282 sq mi
The Dayton metro area (officially the Dayton-Kettering-Beavercreek, OH Metropolitan Statistical Area) has 3 counties in Ohio, with 826,554 people in 2025. Montgomery County is the most populous.
The 3 counties of the Dayton metro area
Sorted by population. 2 are central counties (the urban core); the others are outlying counties tied to it by commuting.
| County | County seat | Population 2025 | Change since 2020 | Land area (sq mi) | Type |
|---|---|---|---|---|---|
| Montgomery County | Dayton | 539,598 | +0.4% | 461 | Central |
| Greene County | Xenia | 174,322 | +3.8% | 414 | Central |
| Miami County | Troy | 112,634 | +3.5% | 407 | Outlying |
The metro area is part of the larger Dayton-Springfield-Kettering, OH Combined Statistical Area.
Printable map
The PDF is a vector file for Letter paper; the PNG is 2400 pixels wide. Both are free to use with a credit to WhichCounty.
County maps of Ohio
Other metro areas
- Cincinnati Metro Area Counties 15 counties
- Columbus Metro Area Counties 10 counties
- Cleveland Metro Area Counties 6 counties
- Akron Metro Area Counties 2 counties
- Toledo Metro Area Counties 3 counties
- New York City Metro Area Counties 22 counties
- Los Angeles Metro Area Counties 2 counties
- Chicago Metro Area Counties 13 counties
- Dallas–Fort Worth Metro Area Counties 11 counties
- Houston Metro Area Counties 10 counties
- Atlanta Metro Area Counties 29 counties
- Washington, D.C. Metro Area Counties 23 counties
- Miami Metro Area Counties 3 counties
- Philadelphia Metro Area Counties 11 counties
- Phoenix Metro Area Counties 2 counties
- Boston Metro Area Counties 7 counties
- Inland Empire Metro Area Counties 2 counties
- San Francisco–Oakland Metro Area Counties 5 counties
- Detroit Metro Area Counties 6 counties
- Seattle Metro Area Counties 3 counties
- Minneapolis–St. Paul Metro Area Counties 15 counties
- Tampa Bay Metro Area Counties 4 counties
- Denver Metro Area Counties 10 counties
- Orlando Metro Area Counties 4 counties
Sources
- Metro area definition: U.S. Office of Management and Budget, Core Based Statistical Areas, July 2023 delineation (published by the Census Bureau).
- Boundaries: U.S. Census Bureau 2025 cartographic boundary files. Population: Census Bureau estimates, Vintage 2025.