The board shall hold meetings, which shall be open to the public, in a place to be designated by the board as often as the needs of the district require, on notice to each member of the board. A quorum of the governing body shall constitute a quorum at any meeting. Notice of time and place of all regular and special meetings shall be posted in three public places within the limits of the district and in the county courthouse at least three days previous to such meetings.
C.R.S. § 30-20-511
For quorum of the governing body of a county, see § 1-4-205.