1 definition found beaconsfield - U.S. Gazetteer (1990) : Beaconsfield, IA (city, FIPS 5095) Location: 40.80698 N, 94.05042 W Population (1990): 27 (14 housing units) Area: 1.9 sq km (land), 0.0 sq km (water) Zip code(s): 50030