According to 1921 census, oblast had linguistically heterogeneous population: speakers of Serbo-Croatian were dominant in the cities of Novi Sad, Sombor and Subotica; speakers of German were dominant in the districts of Apatin, Darda, Kula, Odžaci, Sombor and Stara Palanka; speakers of Hungarian were dominant in the districts of Topola and Batina; while speakers of Slovak were dominant in the district of Novi Sad.
Moscow Oblast | Kaliningrad Oblast | Tver Oblast | Arkhangelsk Oblast | Amur Oblast | Murmansk Oblast | Kirov, Kirov Oblast | Sakhalin Oblast | Krasnogorsk, Moscow Oblast | Vladimir Oblast | Sverdlovsk Oblast | Pskov Oblast | oblast | Leningrad Oblast | Zakarpattia Oblast | Nizhny Novgorod Oblast | Kiev Oblast | Sosnovo, Priozersky District, Leningrad Oblast | Samara Oblast | Penza Oblast | Kirov Oblast | Kemerovo Oblast | Chudovo, Chudovsky District, Novgorod Oblast | Chita Oblast | Znamensk, Kaliningrad Oblast | Sovetsk, Kaliningrad Oblast | Mezhdurechensk, Kemerovo Oblast | Lviv Oblast | Zhukovsky, Moscow Oblast | Voronezh Oblast |