Colo. Rev. Stat. § 29-4-508
The boundaries of such authority shall be the boundaries of the county, but in no event shall they include the whole or a part of any city unless the governing body of said city passes a resolution authorizing the inclusion of said city within the boundaries of such authority nor may it include any area within the county which at the time of the organization of such housing authority was included within the boundaries of a housing authority previously established under part 2 of this article; but nothing in this section shall be deemed to prevent the organization of a housing authority subsequently established by any such city embracing any area within the county exclusive of the area of any project owned or operated by an authority organized under this part 5.
C.R.S. § 29-4-508