Kan. Stat. § 80-1542
If a fire district includes land located in less than four townships, the members of the township boards shall be the governing body of such fire district. If such fire district includes land located in four or more townships, the governing body of such townships, meeting and acting together, shall adopt a resolution fixing the number of members from each township board that will constitute the governing body of such fire district and the period of time that such member will serve on the governing body of such fire district. If any of the members of the township board serving on the governing body of a fire district do not reside in such fire district, the township board shall appoint an elector of such township residing in such fire district to serve on the governing body of such fire district in place of any member of the township board who does not reside in such fire district. In any fire district in which there is located a city of the third class, which has consented to be included in such fire district, the governing body of such city shall appoint a person to serve as a member of the governing body of such fire district. For a fire district which includes land in less than four townships, a member of the township board once elected shall continue to serve as a member of the governing board of the fire district throughout the remainder of such person's term as an officer of the township. The member appointed by a city of the third class shall serve on the governing body of such fire district until a successor is appointed. Any vacancy shall be filled by the township or city of the third class from which such vacancy occurs.
K.S.A. 80-1542