Their settlement became known as Lundie's Cross Roads after a trading post opened in the 1830s to serve pioneers and miners searching for gold.

Also in 1856, a post office was established in County Line, schools were consolidated and corn and cotton became cash crops.

Some years later the church was moved a short distance and a house was built on the left side of the public road near the residence of the late Thomas H. Harris.

In about 1863 the church was moved into the town of Lineville and a house built just west of the present grammar school building; the name was changed to Lineville Baptist Church in 1881 and legally incorporated in 1912; the first Circuit Court that was held in the new County of Clay, was held in the Lineville Baptist Church in 1867, with John Henderson of Talladega, Alabama, as a judge.

By the end of the war, Confederate money had become useless and the area suffered hardships.

The town's name was officially changed to Lineville in 1870 when it became the temporary seat of government for Clay County.

In 1898, Lineville was incorporated, graphite mining became a major industry and National Bank began operating there.

In 1907 the first railroad began operating in Lineville; the timber and lumber industry expanded; and mandated high schools opened.

The Lineville water tank is listed on the Alabama Register of Landmarks and Heritage.

[2] Lineville is located northeast of the center of Clay County at 33°18'45.122" North, 85°45'9.274" West (33.312534, -85.752576).

AL-48 begins in the eastern part of the city and leads east 16 mi (26 km) to Wedowee.

As of the 2020 United States census, there were 2,489 people, 899 households, and 600 families residing in the city.