1 definition found walshville - U.S. Gazetteer (1990) : Walshville, IL (village, FIPS 78656) Location: 39.06941 N, 89.61950 W Population (1990): 44 (14 housing units) Area: 0.7 sq km (land), 0.0 sq km (water) Zip code(s): 62091