Okla. Stat. tit. 56 § 33
Every county of this state shall relieve and support all indigent persons lawfully residing therein, whenever they shall actually need assistance, and shall allow such temporary relief to persons not residing therein as shall be actually necessary pending the ascertainment of his or her legal residence. The boards of county commissioners of the respective counties of this state may, if they deem it to be in the best interests of the county, purchase land for a county indigent care facility and erect such buildings and make such other improvements thereon as shall be necessary to establish a county indigent care facility for such indigent of the county. The board of county commissioners is hereby given authority in their respective counties to place all indigent persons who are desirous of, needing and entitled to support from the county in such facility; and to receive into such facility all indigent and homeless persons who are in need of shelter or a place to convalesce; provided, however, that the boards of county commissioners shall not establish any county indigent care facility in any county of this state, having a valuation of less than Seven Million Dollars ($7,000,000.00), at a greater expense to the county, for lands and improvements thereon, than the sum of Five Thousand Dollars ($5,000.00); in counties having a valuation of more than Seven Million Dollars ($7,000,000.00), and less than Fifteen Million Dollars ($15,000,000.00), at a greater expense to the county, for lands and improvements thereon, than the sum of Ten Thousand Dollars ($10,000.00); in counties having a valuation of Fifteen Million Dollars ($15,000,000.00), and up to Fifty Million Dollars ($50,000,000.00), at a greater expense to the county, for lands and improvements thereon, than the sum of Fifteen Thousand Dollars ($15,000.00); and in counties having Fifty Million Dollars ($50,000,000.00), valuation or more, at a greater expense to the county, for lands and improvements thereon, than the sum of Forty Thousand Dollars ($40,000.00), without having submitted the proposition for the establishment of such facility to a vote of the people of the county at some general election, at which it shall take a majority of all votes cast to carry the proposition.
Okla. Stat. tit. 56, § 33