Flagler is a Statutory Town in western Kit Carson County, Colorado, United States. The town population was 567 at the 2020 United States Census. Flagler is near Exit 395 on I-70.

Kit Carson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 7,087. The county seat is Burlington. The county was established in 1889 and named for American frontiersman and Indian fighter Kit Carson.