Piedmont, MO -- U.S. city in Missouri Population (2000): 1992 Housing Units (2000): 959 Land area (2000): 2.084711 sq. miles (5.399377 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.084711 sq. miles (5.399377 sq. km) FIPS code: 57422 Located within: Missouri (MO), FIPS 29 Location: 37.153868 N, 90.695766 W ZIP Codes (1990): 63957 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Piedmont, MO Piedmont