1 definition found wathena - U.S. Gazetteer (1990) : Wathena, KS (city, FIPS 76000) Location: 39.76430 N, 94.94909 W Population (1990): 1160 (479 housing units) Area: 3.7 sq km (land), 0.0 sq km (water) Zip code(s): 66090