1 definition found romeoville - U.S. Gazetteer (1990) : Romeoville, IL (village, FIPS 65442) Location: 41.64605 N, 88.08630 W Population (1990): 14074 (3959 housing units) Area: 20.6 sq km (land), 0.3 sq km (water) Zip code(s): 60441