Flintside, GeorgiaFlintside is an unincorporated community in Sumter [County, Georgia|Sumter County], in the U.S. state of Georgia.HistoryA post office called Flintside was established in 1924, and remained in operation until 1935. The community was named from its location on the Flint [River (Georgia)|Flint River]. A variant name was "Huguenin".