Orange County is a county located in the Central Piedmont region of the Commonwealth of Virginia. At the 2020 census, the population was 36,254. Its county seat is Orange. Orange County includes Montpelier, the 2,700-acre (1,100 ha) estate of James Madison, the 4th President of the United States and often known as the "Father of the Constitution". The county will celebrate its 290th anniversary in 2024.

Orange is a town and the county seat of Orange County, Virginia, United States. The population was 5,062 at the 2020 census, representing a 7.2% increase since the 2010 census. Orange is 28 miles (45 km) northeast of Charlottesville, 88 miles (142 km) southwest of Washington, D.C., and 4 miles (6 km) east of Founding Father and fourth U.S. president James Madison's plantation of Montpelier.