1 definition found apopka - U.S. Gazetteer (1990) : Apopka, FL (city, FIPS 1700) Location: 28.68675 N, 81.51328 W Population (1990): 13512 (5712 housing units) Area: 23.6 sq km (land), 1.0 sq km (water) Zip code(s): 32712