Okla. Stat. tit. 19, § 905.4

A. Any regional jail district created pursuant to Section 3 of this act shall be governed by a commission. The regional jail commission shall be composed of the sheriff and presiding county commissioner from each county within the district. Each regional jail commissioner of the regional jail district shall serve during his or her tenure as sheriff or as presiding county commissioner. B. Commissioners of the regional jail district shall serve until successors have been duly appointed. Vacancies on the regional jail commission shall be filled by the succeeding sheriff or presiding county commissioner for the remainder of the term. C. Commissioners of the regional jail district shall serve without compensation, except that they shall be reimbursed by the district for any reasonable and necessary expenses in the performance of duties as regional jail commissioner.