Džaperovac is located in the municipality Vojnić, in Karlovac County at an elevation of 185 meters above sea level and it covers the area of 1.48 km² (0.57 sq. miles). According to the 2011 census report, there were only 13 inhabitants. It is predominantly populated by Serbs (94%), but also. Nearby places: Gornja Brusovača, Štakorovica, Krstinja, Široka Rijeka, Donja Brusovača, Jagrovac, Prisjeka, Kusaja, Selakova Poljana and Mracelj.