 A county, initially of the same name but later called Orange, was organized within the district but deorganized in 1791, after the American Revolutionary War.The southwest portion bordering on the Savannah River, about half of Orangeburg District, was separated and organized as Barnwell District in 1800.In 1804 the northern third of the district was separated to form the new Lexington District, which gained another, smaller portion of Orangeburg District in 1832.