Middleburg is a town in Loudoun County, Virginia, United States with a population of approximately 976 as of July 2010.
The town was established in 1787 by American Revolutionary War Lieutenant Colonel and Virginia statesman, Levin Powell. He purchased the land for Middleburg at $2.50 per acre from Joseph Chinn, a first cousin of George Washington. It had been called "Chinn's Crossroads", but Powell chose the new name of Middleburg because of the village's location midway between Arlington va, Virginia, and Winchester, Virginia, on the Ashby Gap trading route (now followed by the U.S. Route 50 highway).
Since the early 1900s, Middleburg began welcoming visitors that descended on the town for foxhunting and steeplechasing. The village soon earned a reputation as the "Nation's Horse and Hunt Capital", attracting prominent visitors from across the U.S. Middleburg is the home of the 15,000-square-foot (1,400 m2) National Sporting Library research center for horse and field sports, which publishes Thoroughbred Heritage on the Internet. New addition is being made to include a art gallery and museum.