From the Wikipedia page [1]
For the area in Kenya formerly known as Busia District, see Busia County.
Busia District is a district in the Eastern Region, Uganda.
Busia District borders Tororo District to the north, Busia County, Kenya to the east, Tanzania to the south, Namayingo District to the south-west, and Bugiri District to the west. Busia, Uganda, the site of the district headquarters, is approximately 35 km (22 mi) by road south of Tororo, the nearest large town.