Olathe is a statutory town in Montrose County, Colorado, United States. The population was 2,019 as of the 2020 census, up from 1,849 at the 2010 census. A post office called Olathe has been in operation since 1896. The community was named after Olathe, Kansas.

Montrose County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 42,679. The county seat is Montrose, for which the county is named.