Coos -- U.S. County in New Hampshire Population (2000): 33111 Housing Units (2000): 19623 Land area (2000): 1800.386147 sq. miles (4662.978515 sq. km) Water area (2000): 31.055616 sq. miles (80.433674 sq. km) Total area (2000): 1831.441763 sq. miles (4743.412189 sq. km) Located within: New Hampshire (NH), FIPS 33 Location: 44.613772 N, 71.339940 W Headwords: Coos Coos, NH Coos County Coos County, NH