Okla. Stat. tit. 19, § 527
The sheriff in a county having a population of at least four hundred fifty thousand (450,000) persons according to the latest Federal Decennial Census shall have the authority to employ a general counsel to advise or represent the sheriff and the office of the sheriff in the performance of the official duties of that office.
Added by Laws 1998, c. 215, § 1, eff. November 1, 1998.