Middleton is in Simpson county on KY 100 about seven miles west of Franklin. The community was centered around Baird's store nearby in Logan county in the mid-nineteenth century, but soon moved to Simpson county. The source of the name Middleton is not certain. A post office operated in the area from 1878 to 1884 at Millikens Store and from 1881 to 1910 at Stowers Store. At some point one or both of them were known as Middleton.