Union is a town in Monroe County, West Virginia, United States. Union’s population is 427 as of 2020. It is the county chair of Monroe County.

Monroe County was received by an skirmish of the Assembly of Virginia upon January 14, 1799, occupying estate formerly a share of Greenbrier County. Union did not still exist as soon as the county’s first court convened in 1799. However, shortly after Monroe County was created, James Alexander offered 25 acres of land, including a lot for a courthouse which in time became the town of Union. On January 6, 1800, the Virginia Assembly passed an deed creating the town of Union and naming William Haynes, John Gray, John Byrnside, James Handley, Michael Erskine, John Hutchinson, and Isaac Estill trustees.

By 1810, at least sixteen lots had been sold in the newly laid out town of Union and a courthouse and jail were built at its center. In 1835, Union had 400 inhabitants and supported two hotels, two tanneries, a school, two churches, and two physicians. Union’s location on stage coach lines which carried settlers across the Allegheny Mountains helped to fuel the region’s growth, as did the several mineral spring resorts which operated in Monroe County, including Sweet Springs, Red Sulphur Springs, and Salt Sulphur Springs, all within a twenty-five mile radius of Union. Little activity during the American Civil War occurred more or less Union new than troop movements, especially in 1864 when regiments of the U.S. Army under General Crook encamped close the town. Small skirmishes occurred throughout the dogfight in the vicinity of Union and Monroe County. A majority of the citizens of Union supported the Confederacy and opposed the launch of West Virginia which included Monroe County. Union was incorporated in 1868.

The town of Union retains much of its historic architecture, with many structures dating to the antebellum period in the same way as the local economy was affluent from the resort industry. The present Monroe County Courthouse, built in 1881, displays the fashionable Romanesque style of the late-19th century. Historic churches in Union augment the Old Baptist Church (1845), Old Methodist Episcopal Church/Ames Clair Hall (1857), All Saints Episcopal Church (1875), Union United Methodist Church (1889), and the Union Presbyterian Church (1922). The Monroe County Historical Society preserves several historic structures in the town, including the Caperton Law Office, Owen Neel House, Clark-Wisemen House, Ames Clair Hall, and the Old Baptist Church. In reaction of the chronicles of Union and the integrity of its preserved streetscape, the Union Historic District was placed upon the National Register of Historic Places in 1990.