1 definition found east dubuque - U.S. Gazetteer (1990) : East Dubuque, IL (city, FIPS 21683) Location: 42.49147 N, 90.63883 W Population (1990): 1914 (840 housing units) Area: 3.1 sq km (land), 0.2 sq km (water) Zip code(s): 61025