Phanom Thuan covers the central part of the sub-district Phanom Tuan, Talat Khet the part central of Rang Wai. The municipality Rang Wai covers the remaining parts of the sub-district, and Nong Sarai the whole of the same-named tambon.
Phanom Thuan encompasses the central area of sub-district Phanom Tuan, Talat Khet covers the central part of Rang Wai. The municipality Rang Wai includes the remaining areas within the sub-district, and Nong Sarai manages the entire named tambon.