Littleton is a home rule municipality city located in Arapahoe, Douglas, and Jefferson counties, Colorado, United States. Littleton is the county seat of Arapahoe County and is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The city population was 45,652 at the 2020 United States Census, ranking as the 20th most populous municipality in Colorado.
Country: United States
State: Colorado
Settled: 1862
Incorporated: March 13, 1890
Elevation: 1,645 m (5,397 ft)
Area code(s): Both 303 and 720
Counties: Arapahoe County · Douglas County · Jefferson County