Colorado Revised Statutes Title 31. Government Municipal § 31-10-301. Electors eligible to hold municipal office

Every registered elector eighteen years of age or older on the date of the election may circulate a nominating petition and hold office in any municipality, unless another age is required by local charter or ordinance, if he or she has resided in the municipality or municipality and ward, as the case may be, from which he or she is to be elected for a period of at least twelve consecutive months immediately preceding the date of the election. In case of an annexation, any person who has resided within the territory annexed for the prescribed time shall be deemed to have met the residence requirements for the municipality and precinct to which the territory was annexed. No person may be a candidate for two municipal offices at the same election nor hold two elective municipal offices simultaneously; except that, in statutory cities, the offices of clerk and treasurer may be sought and held by the same person.