Sylvan Grove, KS -- U.S. city in Kansas Population (2000): 324 Housing Units (2000): 195 Land area (2000): 0.369632 sq. miles (0.957342 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.369632 sq. miles (0.957342 sq. km) FIPS code: 69775 Located within: Kansas (KS), FIPS 20 Location: 39.012860 N, 98.392491 W ZIP Codes (1990): 67481 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sylvan Grove, KS Sylvan Grove