Okla. Stat. tit. 36, § 36-2812: Extension of membership

Nothing in this article shall prevent the membership of any

association from being extended from one county to another provided

the said county into which said membership is extended shall not

cover a territory greater than forty-five counties, nor shall

anything in this article be construed to repeal or conflict with any

law of this state controlling mutual insurance companies engaged in

writing risks in this state.