Wadi Fira's population was 494,933 inhabitants as of 2009.
Biltine Prefecture was one of the 14 prefectures of Chad. Located in the east of the country, Biltine covered an area of 46,850 square kilometers and had a population of 184,807 in 1993. Its capital was Biltine. The Amdang language, spoken in parts of the prefecture, is sometimes called "Biltine".