64080 -- U.S. ZIP code Municipality (1990): PLEASANT HILL, Missouri All ZIPs for this municipality (1990): 64080 Population (2000): 9896 Housing Units (2000): 3803 Land area (2000): 119.298231 sq. miles (308.980988 sq. km) Water area (2000): 1.013629 sq. miles (2.625288 sq. km) Total area (2000): 120.311860 sq. miles (311.606276 sq. km) Located within: Missouri (MO) Location: 38.776782 N, 94.262072 W