The community was named after Alex Alston, a pioneer citizen.[5] A post office has been in operation at Alston since 1910.[6] Alston incorporated in 1910.[5]
Alston was the location of the murder of resident Isaiah Nixon, who was shot in his front yard in front of his wife and six children on September 8, 1948, after voting in the Georgia Democratic primary.[7][8]
Georgia State Route 135 runs through the town, leading north 10 miles (16 km) to Higgston and southwest 3.5 miles (5.6 km) to Uvalda. Mount Vernon, the Montgomery county seat, is 10 miles (16 km) to the northwest via Mount Vernon Alston Road.
According to the United States Census Bureau, Alston has a total area of 2.9 square miles (7.5 km2), of which 0.03 square miles (0.08 km2), or 0.87%, are water.[1]