63539 -- U.S. ZIP code Municipality (1990): ETHEL, Missouri All ZIPs for this municipality (1990): 63539 Population (2000): 289 Housing Units (2000): 158 Land area (2000): 58.088829 sq. miles (150.449370 sq. km) Water area (2000): 0.033209 sq. miles (0.086012 sq. km) Total area (2000): 58.122038 sq. miles (150.535382 sq. km) Located within: Missouri (MO) Location: 39.893011 N, 92.745036 W