El Dorado, KS -- U.S. city in Kansas Population (2000): 12057 Housing Units (2000): 5460 Land area (2000): 6.365517 sq. miles (16.486613 sq. km) Water area (2000): 0.057597 sq. miles (0.149176 sq. km) Total area (2000): 6.423114 sq. miles (16.635789 sq. km) FIPS code: 20075 Located within: Kansas (KS), FIPS 20 Location: 37.821117 N, 96.858281 W ZIP Codes (1990): 67042 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: El Dorado, KS El Dorado