Which U.S. state is the fictional town of South Park located in?

The fictional town of South Park is located in Colorado. In the series, the town sits in the Rocky Mountains within the real-life South Park basin of central Colorado, giving the show its snowy mountain setting and distinctive regional identity.

South Park is not intended to be a precise replica of one real municipality. Its businesses, neighborhoods, school, and surrounding landmarks are fictional, although the setting draws heavily on Colorado locations and culture. The town's visual and geographic inspiration is particularly associated with Fairplay, Colorado, which lies in the South Park basin.

The Colorado setting helps shape the show's recurring details, including mountain weather, ranching, skiing, small-town politics, and references to real state landmarks such as Casa Bonita. Trey Parker and Matt Stone developed the series after creating The Spirit of Christmas shorts, and they based the fictional community in the same broad Colorado landscape. The town is therefore distinct from South Park City, an actual open-air museum in Fairplay.