Lamar, CO -- U.S. city in Colorado Population (2000): 8869 Housing Units (2000): 3656 Land area (2000): 4.231861 sq. miles (10.960468 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.231861 sq. miles (10.960468 sq. km) FIPS code: 43110 Located within: Colorado (CO), FIPS 08 Location: 38.083288 N, 102.620891 W ZIP Codes (1990): 81052 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Lamar, CO Lamar