1 definition found fairborn - U.S. Gazetteer (1990) : Fairborn, OH (city, FIPS 25914) Location: 39.80445 N, 84.01750 W Population (1990): 31300 (13288 housing units) Area: 29.0 sq km (land), 0.0 sq km (water) Zip code(s): 45324