[1] The municipality is located in the southern portion of the province.

The total area is 198.59 km2 (76.68 sq mi).

The Dospat Municipality of Smolyan Province is to the south-east, while Garmen and Satovcha municipalities of Blagoevgrad Province adjoin the region in the south-west.

There are only three communities with a permanent population: Sarnitsa, Pobit Kamak and Medeni Polyani, with only Sarnitsa being a town.

[3] The majority of the people in the municipality are Bulgarian-speaking Muslims.