1 definition found champlin - U.S. Gazetteer (1990) : Champlin, MN (city, FIPS 10846) Location: 45.16546 N, 93.38923 W Population (1990): 16849 (5532 housing units) Area: 21.2 sq km (land), 1.6 sq km (water) Zip code(s): 55316