Summit County, Colorado

Summit County is a county in Colorado with an estimated population of 30,465 in 2023. 5 cities, towns and Census places in it are indexed here.

Largest places in Summit County

About Summit County

Summit County is one of the counties of Colorado. County governments in Colorado handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.