Prijedor is a city and municipality in Republika Srpska, Bosnia and Herzegovina. As of 2013, it had a population of 89,397 inhabitants wi…Prijedor is a city and municipality in Republika Srpska, Bosnia and Herzegovina. As of 2013, it had a population of 89,397 inhabitants within its administrative limits. Prijedor is situated in the northwestern part of the Bosanska Krajina geographical region.