1 definition found bennettsville - U.S. Gazetteer (1990) : Bennettsville, SC (city, FIPS 5680) Location: 34.63157 N, 79.68608 W Population (1990): 9345 (3746 housing units) Area: 13.8 sq km (land), 1.6 sq km (water) Zip code(s): 29512