[2] Kirkland (both the post office and, consequently, the surrounding hamlet) was likely named for the several large families of that surname in the area.
Another possibility was William Kirkland, who operated a general store adjacent to the post office.
He built a house, a grist mill, and cotton gins, which were operated by water power.
Mack and Bill moved to the north side of the railroad, built houses, and got married.
This Atkinson County, Georgia state location article is a stub.