Walnut Grove, AL -- U.S. town in Alabama Population (2000): 710 Housing Units (2000): 294 Land area (2000): 5.012129 sq. miles (12.981355 sq. km) Water area (2000): 0.017939 sq. miles (0.046463 sq. km) Total area (2000): 5.030068 sq. miles (13.027818 sq. km) FIPS code: 79728 Located within: Alabama (AL), FIPS 01 Location: 34.063983 N, 86.279254 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Walnut Grove, AL Walnut Grove