Middleburg is a town in Loudoun County, Virginia, United States. The Middleburg Historic District, comprising the 19th-century center of town, is listed on the National Register of Historic Places. The oldest building in town, the Red Fox Inn, was originally established in 1728 by Joseph Chinn as Chinn’s Ordinary and is billed as the oldest continually operated inn in the U.S. Also listed on the National Register of Historic Places are Benton, the Burrland Farm Historic District, Green Pastures, Huntland, Mill House, Gen. William Mitchell House, Much Haddam, Unison Historic District, and Welbourne.
The median income for a household in the town was $40,625, and the median income for a family was $60,313. Males had a median income of $41,875 versus $32,708 for females. The per capita income for the town was $32,643. About 6.7% of families and 9.9% of the population were below the poverty line, including 10.7% of those under age 18 and 10.3% of those age 65 or over.