Kelsey is an unincorporated area in Upshur County, Texas, United States that was the longest-lasting settlement founded by members of the Church of Jesus Christ of Latter-day Saints in the state.

In fact, Captain Hart had left eastern Tennessee to follow Miss Evaline Kelsey and her family to Marshall, Texas in 1836.

In addition to being a land surveyor, Captain Hart also was the first county clerk of Upshur County, Postmaster of Gilmer, and later represented his district in the state legislature, was a magistrate, Justice of the Peace, Mason, and was a Methodist.

In 1898, John Edgar—who had tried to settle in Mesa, Arizona, but had not succeeded—settled near Hopewell in Upshur County.

The railroad built a branch line to Kelsey to facilitate the loading of such products as strawberries, cantaloupes and corn that were grown in the community.

[2] During the 1930s, Kelsey farmers provided food to the oil workers in Kilgore and Gladewater, Texas.