Eureka, KS -- U.S. city in Kansas Population (2000): 2914 Housing Units (2000): 1561 Land area (2000): 1.955521 sq. miles (5.064775 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.955521 sq. miles (5.064775 sq. km) FIPS code: 21800 Located within: Kansas (KS), FIPS 20 Location: 37.822745 N, 96.289583 W ZIP Codes (1990): 67045 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Eureka, KS Eureka