Wahpeton, ND -- U.S. city in North Dakota Population (2000): 8586 Housing Units (2000): 3492 Land area (2000): 4.997368 sq. miles (12.943123 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.997368 sq. miles (12.943123 sq. km) FIPS code: 82660 Located within: North Dakota (ND), FIPS 38 Location: 46.269931 N, 96.610463 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Wahpeton, ND Wahpeton