Wyo. Stat. § 18-10-213: Administration of finances; assessments and taxation.

(a) Annually, each county assessor shall provide the board of county commissioners with the total assessed value of all taxable property within a special museum district in his county.

(b) The board of county commissioners at the same time they levy for county purposes shall levy a tax not exceeding one (1) mill upon the taxable property in the district in its county for its proportionate share based on the assessed valuation and the estimated amount of funds needed by each district. The taxes shall be collected at the same time and in the same manner as state and county taxes. The tax levy provided by this section shall not be construed as being a part of the general county mill levy.