Lopare is a town and municipality in Bosnia and Herzegovina. It is situated in the Majevica region of the Republika Srpska entity. According to the latest population census from 1991, the municipality had 32,537 inhabitants, out of which 18,243 were Serbs, 11,990 were Bosniaks, 1,263 were Croats and 1,041 Others. It is important to emphasize that the municipal territory was reduced by around 30% during the war, as well as that almost one third of the pre-war population now lives in the neighbouring municipality of Celic. During and after the war, significant changes occurred in the demographic structure of the municipality.
According to the 1971 census, the population of the Lopare was 33,847. According to the 1991 census, the population of the Lopare (which then included the territory of today's Čelić municipality, which is in the Federation of BiH) municipality was 32,400, including: