Colorado Revised Statutes Title 17. Corrections § 17-26-101. Jail in each county

There shall be maintained in each county in this state, at the expense of the county, a county jail for the detention, safekeeping, and confinement of persons and prisoners lawfully committed. Nothing in this article shall be construed to compel the erection of jails in counties having a population of less than two thousand or when the county owns a jail erected in any other place in the county.