Park County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 17,390. The county seat is Fairplay. The county was named after the large geographic region known as South Park, which was named by early fur traders and trappers in the area.

Fairplay is a statutory town that is the county seat and the most populous municipality of Park County, Colorado, United States. The town population was 724 at the 2020 United States Census. Fairplay is located in South Park at an elevation of 9,953 feet (3,034 m). The town is the fifth-highest incorporated place in the State of Colorado. Fairplay is now a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area and the Front Range Urban Corridor.