View a list of Postal Codes in Bosnia and HerzegovinaThe average area for zip codes in Bosnia and Herzegovina is 91.4 km² with the largest being 80270 in Bosansko Grahovo, Federation of Bosnia and Herzegovina at 770.3 km² and the smallest being 76211 in Brčko, Brčko at 0.759 km². In Bosnia and Herzegovina the average population for a postal code is 6,786 with the most populated being zip code 71000 in Sarajevo, Federation of Bosnia and Herzegovina at 283,974. The average population density for a postal code in Bosnia and Herzegovina is 134.9 / km² with the densest being zip code 71124 in Sarajevo, Federation of Bosnia and Herzegovina at 6,019 / km². The median age for postal codes in Bosnia and Herzegovina range from 31.4 years old for 77243 in Bužim, Federation of Bosnia and Herzegovina to 52.3 years old for 71230 in Kalinovik, Republika Srpska.