Originally it was formerly part of the then-larger Wa District in 1988; until two parts of the district were later split off to create Wa East District (from the east) and Wa West District (from the west) respectively in July 2004; thus the remaining part was elevated to municipal district assembly status in the same year to become Wa Municipal District.
In 1988, it was part of the larger Wa District; however, by July 2004, two sections of the district were split off to create Wa East District (from the east) and Wa West District (from the west); consequently, the remaining area was elevated to municipal district assembly status in the same year to become Wa Municipal District.