Pleasant Plain, IA -- U.S. city in Iowa Population (2000): 131 Housing Units (2000): 57 Land area (2000): 1.014202 sq. miles (2.626772 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.014202 sq. miles (2.626772 sq. km) FIPS code: 63615 Located within: Iowa (IA), FIPS 19 Location: 41.145784 N, 91.859581 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Pleasant Plain, IA Pleasant Plain