Colo. Rev. Stat. § 32-1-304
Except as otherwise provided in section 32-1-304.5, immediately after the filing of a petition, the court wherein the petition is filed, by order, shall fix a place and time, not less than twenty-one days nor more than forty-two days after the petition is filed, for hearing thereon. The clerk of the court shall cause notice by publication to be made of the pendency of the petition, the purposes and boundaries of the special district, and the time and place of hearing thereon. The clerk of the court shall also forthwith cause a copy of the notice to be sent by United States first-class mail or by electronic service using the e-filing system of the judicial department to the board of county commissioners of each of the several counties and to each party entitled to notice pursuant to section 32-1-206(2). The notice must include a general description of the land contained within the boundaries of the proposed special district and information explaining methods and procedures for the filing of a petition for exclusion of territory pursuant to section 32-1-305(3).
C.R.S. § 32-1-304
The provisions of this section are similar to provisions of several former sections as they existed prior to 1981.
For requirements for notice by publication, see part 1 of article 70 of title 24.