Dunlap, IA -- U.S. city in Iowa Population (2000): 1139 Housing Units (2000): 524 Land area (2000): 1.091111 sq. miles (2.825964 sq. km) Water area (2000): 0.014150 sq. miles (0.036648 sq. km) Total area (2000): 1.105261 sq. miles (2.862612 sq. km) FIPS code: 22890 Located within: Iowa (IA), FIPS 19 Location: 41.853952 N, 95.599862 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dunlap, IA Dunlap