The numbers 26 to 28 were reserved for three other planned (minor) districts: Phu Kham Noi, Nong Kae and Non Han.
There are plans to split off the northwestern part of the province to form a new province centered at Phu Wiang. The other districts which will belong to this new province are Nong Ruea, Chum Phae, Si Chomphu, Phu Pha Man, Nong Na Kham, and Wiang Kao.[citation needed]