Detroit Metro Area Counties

6 counties · 4.4 million people (2025) · 3,893 sq mi

The Detroit metro area (officially the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area) has 6 counties in Michigan, with 4,390,913 people in 2025. Wayne County is the most populous.

Map of the 6 counties of the Detroit metro area with county names and major cities
The 6 counties of the Detroit metro area (yellow) with the largest cities. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
PDF (Letter) 218 KBPNG (2400 px) 127 KB

The 6 counties of the Detroit 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
Wayne CountyDetroit1,769,038−1.4%612Central
Oakland CountyPontiac1,288,337+1.1%867Central
Macomb CountyMount Clemens886,221+0.6%479Central
Livingston CountyHowell197,315+1.8%565Outlying
St. Clair CountyPort Huron160,486+0.1%722Outlying
Lapeer CountyLapeer89,516+1%648Outlying

The metro area is part of the larger Detroit-Warren-Ann Arbor, MI 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 Michigan

Other metro areas

Sources