Johnstonville is an unincorporated community in Lamar County, in the U.S. state of Georgia. [1]
Johnstonville was founded in 1821, and served as temporary county seat. [2] A post office called Johnstonville was established in 1839, and remained in operation until 1905. [3] The community most likely was named after one of two Johnston family of pioneer settlers. [4]