Trinidad, CO -- U.S. city in Colorado Population (2000): 9078 Housing Units (2000): 4126 Land area (2000): 6.306886 sq. miles (16.334759 sq. km) Water area (2000): 0.000547 sq. miles (0.001418 sq. km) Total area (2000): 6.307433 sq. miles (16.336177 sq. km) FIPS code: 78610 Located within: Colorado (CO), FIPS 08 Location: 37.170944 N, 104.506447 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Trinidad, CO Trinidad