64430 -- U.S. ZIP code Municipality (1990): CLARKSDALE, Missouri All ZIPs for this municipality (1990): 64430 Population (2000): 800 Housing Units (2000): 346 Land area (2000): 42.175040 sq. miles (109.232847 sq. km) Water area (2000): 0.040734 sq. miles (0.105501 sq. km) Total area (2000): 42.215774 sq. miles (109.338348 sq. km) Located within: Missouri (MO) Location: 39.827889 N, 94.567854 W