Mo. Rev. Stat. § 37.135

So long as this state is divided into precincts for election purposes, whenever this state is allowed or offered the option to have a federal census taken on a precinct-by-precinct basis, the commissioner of administration shall have the authority and duty to take the necessary steps to contract with the federal government and pay within the limits of moneys appropriated for that purpose any sums of money required to have the federal census taken on a precinct-by-precinct basis.