1 definition found searsboro - U.S. Gazetteer (1990) : Searsboro, IA (city, FIPS 71355) Location: 41.57988 N, 92.70477 W Population (1990): 164 (78 housing units) Area: 1.0 sq km (land), 0.0 sq km (water) Zip code(s): 50242