Okla. Stat. tit. 19, § 19-866.17: Division into districts or zones

Whenever the commission of such county shall make and certify to

the board of county commissioners of such county a zoning plan,

including both the full text of the zoning resolution and proposed

regulations and map or maps, representing the recommendations of the

commission for the regulation by districts or zones, of the

location, height, bulk, number of stories and size of buildings and

other structures in the areas of the county, not included within the

territorial jurisdiction of the municipality as herein defined, and

the percentage of the lot or area which may be occupied, the size of

yards, courts, and other open spaces, the density and distribution

of population, the uses of buildings, structures, and land for

trade, industry, residence, recreation, civic, and public activities

and other purposes, then the board may exercise the powers granted

and, for the purposes mentioned in 19 O.S. 1961, Section 866.16, may

divide the areas of such county located within three miles of such

municipality or within one-fourth mile of a state or federal

highway, and not included within the territorial jurisdiction of the

municipality or within another incorporated municipality, into

districts or zones in such number, shape, and areas as it may

determine and, for said purposes, may regulate the erection,

construction, reconstruction, conversion, alteration, and uses of

buildings and structures and the uses of land. All such regulations

shall be uniform for each class or kind of buildings throughout each

district, but the regulations in one district may differ from those

in other districts. In every county of this state having an

upstream terminal port and turnaround where navigation ends, or in

any county containing all or any part of a reservoir or reservoirs

constructed by the United States Army Corps of Engineers, such

county is hereby granted authority, at the discretion of the board

of county commissioners, to divide all or any part of unincorporated

areas of such county into districts or zones in such number, shape,

and areas as it may determine and, for said purposes, may regulate

the erection, construction, reconstruction, conversion, alteration,

and uses of buildings and structures and the uses of land. All such

regulations shall be uniform for each class or kind of buildings

throughout each district, but the regulations in one district may

differ from those in other districts.