The Okanagan (/oʊkəˈnɑːɡən/ OHK-ə-NAH-gən), also known as the Okanagan Valley and sometimes as the Okanagan Country, is a region located in the Canadian province of British Columbia defined by the basin of Okanagan Lake and the Canadian portion of the Okanagan River. It is part of the Okanagan Country, extending into the United States as Okanogan Country. As of 2011, the region's population is approximately 341,818. The primary city is Kelowna.