Denver Metro Area Counties

10 counties · 3.1 million people (2025) · 8,345 sq mi

The Denver metro area (officially the Denver-Aurora-Centennial, CO Metropolitan Statistical Area) has 10 counties in Colorado, with 3,092,037 people in 2025. Denver County is the most populous.

Map of the 10 counties of the Denver metro area with county names and major cities
The 10 counties of the Denver metro area (yellow) with the largest cities. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
PDF (Letter) 206 KBPNG (2400 px) 110 KB

The 10 counties of the Denver metro area

Sorted by population. 6 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
Denver CountyDenver740,613+3.5%153Central
Arapahoe CountyLittleton673,820+2.9%798Central
Jefferson CountyGolden580,451−0.4%764Central
Adams CountyBrighton554,668+6.8%1,167Central
Douglas CountyCastle Rock399,396+11.6%840Central
Broomfield CountyBroomfield79,174+6.8%33Central
Elbert CountyKiowa30,534+17.2%1,851Outlying
Park CountyFairplay18,314+5.3%2,194Outlying
Clear Creek CountyGeorgetown8,994−4%395Outlying
Gilpin CountyCentral City6,073+4.7%150Outlying

The metro area is part of the larger Denver-Aurora-Greeley, CO 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 Colorado

Other metro areas

Sources