1 definition found eagan - U.S. Gazetteer (1990) : Eagan, MN (city, FIPS 17288) Location: 44.81940 N, 93.16300 W Population (1990): 47409 (18450 housing units) Area: 83.5 sq km (land), 2.9 sq km (water) Zip code(s): 55120, 55121, 55122, 55123