Emergency Crime Scene and Biohazard Cleanup in King William, VA

King William is a census-designated place (CDP) in King William County, Virginia, and it is the county seat, also known as King William Courthouse or King William Court House.

King William was first listed as a census-designated place in the 2010 U.S. census.

As of the 2020 census, King William had a population of 276, up 9.5 percent from 252 in the 2010 census.

King William County was formed in 1702 out of King and Queen County, under an act effective April 11, 1702, and was named for King William III of England, also known as William of Orange.

King William contains the oldest courthouse in continuous use in the United States, the King William County Courthouse, built in 1725.

The 1725 courthouse is a T-shaped brick building in Flemish bond, described by the Virginia Department of Historic Resources as the best preserved of Virginia's eleven colonial court buildings; it was listed on the Virginia Landmarks Register in 1968 and the National Register of Historic Places in 1969, and was enlarged in 1840 behind a brick wall around the court green.

The King William Training School, Sharon Indian School, and Sweet Hall in the community are also listed on the National Register of Historic Places.

King William covers about 4.6 square miles along Virginia State Route 30, about 17 miles northwest of West Point and 31 miles by road east of Richmond, and it lies 2 miles south of Horse Landing on the tidal Mattaponi River.

King William County, which had 17,810 people in the 2020 census, lies in Virginia's Middle Peninsula in the Greater Richmond Region, bounded by the Mattaponi River to the north and the Pamunkey River to the south, which join to form the York River at West Point, the county's largest town.

The Pamunkey Indian Reservation lies 10 miles south of King William; its Pamunkey Indian Tribe Museum was established in 1979, and the chiefs Wahunsonacock and Opechancanough are buried on the reservation.