[2] King William County is located in the Middle Peninsula and is included in the Greater Richmond Region.

For thousands of years before European contact, indigenous peoples of North America lived in the Tidewater area of present-day Virginia.

At the time of the founding of Jamestown, 30 Virginia Native American tribes comprised the Powhatan paramountcy, numbering 14,000-21,000 people.

The Mattaponi are one of two Virginia Indian tribes who still occupy reservation land first allocated by the English under treaty in the 17th century.

One prominent family during Colonial Virginia times was that of William Aylett.

The county is named for William of Orange, King of England.

18.30% of all households were made up of individuals, and 7.60% had someone living alone who was 65 years of age or older.

Source:[13] Stacey Davenport serves as the County Administrator for King William, having been appointed in September 2024.> King William is represented by Republican Thomas K. "Tommy" Norment, Jr. in the Virginia Senate, Republicans Scott A. Wyatt and M. Keith Hodges in the Virginia House of Delegates, and Republican Robert J.