Sponsored Topics. North Bend is a city in Coos County, Oregon, in the United States with an estimated population is 9,855 (as of 2010). North Bend is surrounded on three sides by Coos Bay, an S-shaped water inlet and estuary where the Coos River enters Coos Bay on the Pacific Ocean, and borders the city of Coos Bay, Oregon to the south. North Bend became an incorporated city in 1903.