Denver -- U.S. County in Colorado Population (2000): 554636 Housing Units (2000): 251435 Land area (2000): 153.350592 sq. miles (397.176192 sq. km) Water area (2000): 1.586631 sq. miles (4.109354 sq. km) Total area (2000): 154.937223 sq. miles (401.285546 sq. km) Located within: Colorado (CO), FIPS 08 Location: 39.726287 N, 104.965486 W Headwords: Denver Denver, CO Denver County Denver County, CO