Northumberland County is located in the Northern Neck region of Virginia. It is bordered by the Rappahannock River to the north, the Potomac River to the east, and the Chesapeake Bay to the south. The county seat is Heathsville.

The county was established in 1648 and is one of the oldest counties in Virginia. It is governed by a five-member Board of Supervisors, elected from single-member districts. The county is served by a sheriff, a commonwealth's attorney, and a clerk of the circuit court.

The county is home to several historic sites, including the Northumberland County Courthouse, the Northumberland County Jail, and the Northumberland County Courthouse Museum. The county is also home to several parks, including the Northumberland County Park, the Northumberland County Nature Preserve, and the Northumberland County Wildlife Management Area.

For the most up-to-date and in-depth information, please check the public records links below.