Alamosa -- U.S. County in Colorado Population (2000): 14966 Housing Units (2000): 6088 Land area (2000): 722.743194 sq. miles (1871.896200 sq. km) Water area (2000): 0.783883 sq. miles (2.030248 sq. km) Total area (2000): 723.527077 sq. miles (1873.926448 sq. km) Located within: Colorado (CO), FIPS 08 Location: 37.509886 N, 105.803012 W Headwords: Alamosa Alamosa, CO Alamosa County Alamosa County, CO