Falmouth is a census-designated place (CDP) in Stafford County, Virginia, United States.

Founded in 1728 by the same act of the Virginia General Assembly that established neighboring Fredericksburg, Falmouth was created as a port town on the Rappahannock to serve inhabitants living north of the river within the vast Northern Neck holdings of Lord Fairfax.

Thomas Jefferson made special provision to protect the ironworks during the American Revolution.

This road follows a northwesterly route that was originally called the Shenandoah Hunting Path and crossed through the Piedmont counties of Stafford and Fauquier before passing over the Blue Ridge Mountains at Ashby's Gap.

It was a stop on the Richmond, Fredericksburg and Potomac Railroad in the 19th century which was replaced by CSXT today.

During the American Civil War, Falmouth was occupied by the Union Army in 1862 and 1863, and Northern commanders located their headquarters southeast of the town during the Fredericksburg and Chancellorsville campaigns.

Chatham Manor, the 1771 home of William Fitzhugh and a Union headquarters during the Civil War, is located downstream from Falmouth, opposite the historic district of Fredericksburg.

[7] The lake was named for Jason Mooney who was a Stafford sheriff's deputy who died in the line of work in 2007.

[8][9] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.