The Biruaca Municipality is one of the seven municipalities (municipios) that makes up the Venezuelan state of Apure and, according to the 2011 census by the National Institute of Statistics of Venezuela, the municipality has a population of 54,323. The town of Biruaca is the municipal seat of the Biruaca Municipality.
The Biruaca Municipality, according to a 2007 population estimate by the National Institute of Statistics of Venezuela, has a population of 54,233 (up from 45,180 in 2000). This amounts to 11.4% of the state's population. The municipality's population density is 42.34 PD/sqkm.
