Thayer, KS -- U.S. city in Kansas Population (2000): 500 Housing Units (2000): 203 Land area (2000): 0.665371 sq. miles (1.723304 sq. km) Water area (2000): 0.065671 sq. miles (0.170088 sq. km) Total area (2000): 0.731042 sq. miles (1.893392 sq. km) FIPS code: 70300 Located within: Kansas (KS), FIPS 20 Location: 37.487127 N, 95.476237 W ZIP Codes (1990): 66776 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Thayer, KS Thayer