35640 -- U.S. ZIP code Municipality (1990): HARTSELLE, Alabama All ZIPs for this municipality (1990): 35640 Population (2000): 21124 Housing Units (2000): 8868 Land area (2000): 108.487574 sq. miles (280.981514 sq. km) Water area (2000): 0.117313 sq. miles (0.303838 sq. km) Total area (2000): 108.604887 sq. miles (281.285352 sq. km) Located within: Alabama (AL) Location: 34.442184 N, 86.940279 W