Greeley, CO -- U.S. city in Colorado Population (2000): 76930 Housing Units (2000): 28972 Land area (2000): 29.904707 sq. miles (77.452833 sq. km) Water area (2000): 0.094797 sq. miles (0.245523 sq. km) Total area (2000): 29.999504 sq. miles (77.698356 sq. km) FIPS code: 32155 Located within: Colorado (CO), FIPS 08 Location: 40.415119 N, 104.723988 W ZIP Codes (1990): 80634 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Greeley, CO Greeley