According to the last census from 1991.Municipality Prnjavor had 46.894 inhabitants. Out of that number 33.575 declared as the Serbs, 1.737 as the Croats, 7.153 as the Muslims, 1.718 as Yugoslavs and 2.711 as the “others”. The members of national minorities declared as the Yugoslavs and the “others”. Before the war most of them were: the Ukrainians, then the Italians, the Czechs, the Polish, and less number of the Roma, the Germans, the Slovaks, the Albanians, the Hungarians, the Russians and the Romanians. According to unofficial data Municipality Prnjavor today has about 50.000 inhabitants. All three constitutive nations are represented in the Municipality Prnjavor- majority is the Serbs, then the Muslims and the Croats. The most representative minorities are: the Ukrainians, the Italians, the Czechs, the Polish, the Roma, the Hungarians, the Germans, the Russians, and the Slovaks. It is important to point out that the structure and the number of the members of national minorities haven’t been changed much in relation to the period before the war i.e. there hasn’t been more massive migrations caused by the war events (only individual cases) and that the nationals minorities were sharing the same destiny with the Serbian majority and that the reasons for disappearance of certain national groups are assimilation (mixed marriages-certain national groups were to small to keep clean national structure).