 The Canada – United States border — with an official crossing into Osoyoos, British Columbia from Oroville — lies approximately 45 miles (72 km) to the north. The Idaho border lies about 160 miles (260 km) southeast. The state's largest city, Seattle, lies 237 miles (381 km) southwest of Omak. The Okanogan River, coming out of the town of Riverside, defines the city's northern border, while the southern border is defined by the city of Okanogan; the terrain here is mountainous and forested. The nearest primary statistical area is the Wenatchee – East Wenatchee metropolitan area. A CDP located northeast of the city was named North Omak because of its proximity to Omak. It is part of two census county divisions: Omak (western half) and Colville Reservation (eastern half).
