North Kazakhstan Region (Kazakh: Солтүстік Қазақстан облысы, Soltüstik Qazaqstan oblısı, سولتٷستىک قازاقستان وبلىسى) is a region of Kazakhstan, with a population of 665,800. Its capital is Petropavl, with a population of 193,300 people. The region borders Russia to the north, and also borders three other Kazakhstan regions: Akmola Region to the south, Pavlodar Region to the east and Kostanay Region to the west. The area of the region is 98,040 km2 (37,850 sq mi), making it the fourth smallest of all the regions of Kazakhstan. The Ishim (Esil) River, a tributary of the Irtysh River, flows from Karagandy Region to Russia through North Kazakhstan Region.
The national structure also considerably varies on areas and area cities. So, in Petropavlovsk Russian make — 71,12% of the population, in Ualihanovsky area Kazakhs — 86,04% of the population prevail. In more details about national structure of areas according to 2004 under the reference . The Polish diaspora largest in Kazakhstan (Poles in Kazakhstan See) lives In area.
Besides, СКО was unique area in Kazakhstan with natural decline in population, however since 2008 in area the natural increase of the population  is observed.