Columbus Metro Area Counties

10 counties · 2.2 million people (2025) · 4,797 sq mi

The Columbus metro area (officially the Columbus, OH Metropolitan Statistical Area) has 10 counties in Ohio, with 2,242,028 people in 2025. Franklin County is the most populous.

Map of the 10 counties of the Columbus metro area with county names and major cities
The 10 counties of the Columbus metro area (yellow) with the largest cities. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
PDF (Letter) 192 KBPNG (2400 px) 128 KB

The 10 counties of the Columbus metro area

Sorted by population. 3 are central counties (the urban core); the others are outlying counties tied to it by commuting.

CountyCounty seatPopulation 2025Change since 2020Land area (sq mi)Type
Franklin CountyColumbus1,361,536+2.9%532Central
Delaware CountyDelaware242,032+13%443Central
Licking CountyNewark185,564+4%682Outlying
Fairfield CountyLancaster169,752+6.8%504Central
Union CountyMarysville73,446+17%432Outlying
Pickaway CountyCircleville62,978+7.6%501Outlying
Madison CountyLondon46,985+7.1%467Outlying
Morrow CountyMount Gilead36,305+3.9%406Outlying
Perry CountyNew Lexington35,918+1.4%408Outlying
Hocking CountyLogan27,512−1.9%421Outlying

The metro area is part of the larger Columbus-Marion-Zanesville, 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

All 97 metro area county maps

Sources