The population of Nong Khai Province is 883,704.
The population of Mueang Khong is 4,244.
The population of Rim Khong is 6,386.
The population of Ping Khong is 11,606.
The population of Mae Khong is 4,154.
Sop Khong's population is 6,285.
Khun Khong's population is 4,772.
Wong Khong's population is 10,625.
The population of Mueang Na is 31,574.
Mueang Phan's population is 19,326.
Mueang Kaeo's population is 5,423.
The population of Mueang Ngai is 6,513.
The population of Mueang Chi is 9,298.
Mueang Kai's population is 1,938.