Colorado Code
Article 40 - Forcible Entry and Detainer - General Provisions
§ 13-40-108. Service of Notice to Quit

A notice to quit or demand for possession of real property may be served by delivering a copy thereof to the tenant or other person occupying such premises, or by leaving such copy with some person, a member of the tenant's family above the age of fifteen years, residing on or in charge of the premises, or, in case no one is on the premises at the time service is attempted, by posting such copy in some conspicuous place on the premises.
Source: L. 1885: p. 226, § 7. R.S. 08: § 2607. C.L. § 6373. CSA: C. 70, § 8. CRS 53: § 58-1-8. L. 61: p. 390, § 1. C.R.S. 1963: § 58-1-8.