Okla. Stat. tit. 26, § 26-3-116: Precinct boundaries

A. The boundary line of any precinct shall not cross the

boundary line of any district court judicial district electoral

division or any congressional, legislative or county commissioner

district.

B. Boundaries of all precincts shall enclose a contiguous area

and follow clearly visible, definable and observable physical

boundaries which are based upon criteria established and recognized

by the Bureau of the Census of the United States Department of

Commerce for purposes of defining census blocks for its decennial

census, provided that no municipal boundary that is not such a

visible, definable and observable physical boundary shall be used as

a precinct boundary.