Official languages of Bosnia and Herzegovina are Bosnian, Croatian, and Serbian. According to the 1991 census, Bosnia and Herzegovina had 40 percent of Muslims, 31 percent of Orthodox Christians, 15 percent Catholics, and 14 percent of other religions.
The census was conducted in the period from October 1 to October 15, 2013, with a reference date of census September 30, 2013. The first preliminary census results were published by the Agency for Statistics of Bosnia and Herzegovina on November 5, 2013. According to the results, revealing that 3,531,159 persons in Bosnia and Herzegovina were enumerated. Of this number, 50.94 per cent is female population and 49.06 per cent male population.
The Federation of Bosnia and Herzegovina has 2,219,220 inhabitants, which makes 62.85 percent of the total population in Bosnia and Herzegovina. In Republic of Srpska live 1,228,423 inhabitant, which makes 34.79 percent of the total population in Bosnia and Herzegovina. Brčko District of Bosnia and Herzegovina has a total population of 83,516, which is 2.37 percent of the total population of the permanent population in Bosnia and Herzegovina.
The largest city in Bosnia and Herzegovina is Sarajevo with 275,524 inhabitants in four city municipalities, followed by Banja Luka with 185,042 inhabitants, then Tuzla with 110,979, Zenica 110,663, Bijeljina 107,715 and the city of Mostar with 105,977 inhabitants. These cities are the only ones that have more than 100,000 inhabitants.
According to ethnicity, Bosnia and Herzegovina has 50.11% of Bosniaks, 15.43% Croats, 30.78% Serbs, while 0.77% of the population has not made a statement. At the level of the Federation of Bosnia and Herzegovina, 70.4 per cent of Bosniaks, 22.4 per cent Croats, and 3.6 per cent of Serbs. In Republika Srpska there are 81, 51 percent of Serbs, 13, 99 percent of Bosniaks, and 2.41 percent Croats. In Brčko District, 42.36 percent of Bosniaks, 20.66 percent of Croats and 34.58 percent of Serbs.
According to the published data on the religious structure of the population, 50.7 percent of the population is Muslim, 15.19 percent Catholics, and 30.75 percent Orthodox.