Okanogan -- U.S. County in Washington Population (2000): 39564 Housing Units (2000): 19085 Land area (2000): 5268.066164 sq. miles (13644.228149 sq. km) Water area (2000): 47.092601 sq. miles (121.969271 sq. km) Total area (2000): 5315.158765 sq. miles (13766.197420 sq. km) Located within: Washington (WA), FIPS 53 Location: 48.535173 N, 119.581592 W Headwords: Okanogan Okanogan, WA Okanogan County Okanogan County, WA