Allensville is a census-designated place and former city in Todd County, Kentucky, in the United States.

Settled in the 19th century and formally incorporated in 1867, the city was named for a pioneer family in the area.

By the late 1830s, Allensville included a post office, two general stores, and a blacksmith shop.

[4] In 1860, the L&N established a depot just south of the old Allensville community as part of its branch line from Bowling Green, Kentucky, to Memphis, Tennessee.

After the Civil War, the city incorporated, and thrived for several decades as one of the primary agricultural shipping points between Bowling Green and Memphis.

The community lies southeast of Elkton, southwest of Russellville, and a few miles north of the Kentucky-Tennessee state line.

According to the United States Census Bureau, the city had a total area of 1.1 square miles (2.8 km2), all land, in 2000.