 The population was 2,788,849 as of the 2018 Census.Novosibirsk Oblast is located in the south of the West Siberian Plain, at the foothills of low Salair ridge, between the Ob and Irtysh Rivers.The oblast borders Omsk Oblast in the west, Tomsk Oblast in the north, Kemerovo Oblast in the east, and Altai Krai together with Kazakhstan (Pavlodar Province) in the south.