Dubica is a town and municipality located in northern Bosnia and Herzegovina and is administratively part of Republika Srpska. Dubica, for short, is situated in the eastern part of Bosanska Krajina region. The municipality of Hrvatska Dubica lies to the north, in Croatia. Dubica is situated 26 km (16 mi) from the Zagreb–Belgrade Highway. The town and its suburbs border the Republic of Croatia to the north, the town of Bosanska Gradiška to the east, the town of Bosanska Kostajnica to the west, and the town of Prijedor to the south. The land area of Kozarska Dubica is 499 km2 (193 sq mi) and the population is estimated at about 31,000, even though no census has been held since 1991.