The local population of Mae Sariang is of mixed origin. The main ethnicity in the low land plain, town center and its satellite villages along the river is Tai Yuan (Northern Thai or Lanna people) with some cross-marriage with other ethnicities.
In Mae Sariang, the local population consists of diverse ethnicities. The primary ethnic group in the lowland areas, central towns, and nearby villages along the river is Tai Yuan (Northern Thai or Lanna people), with occasional marriages to other ethnic groups.