Westmoreland County is situated on the Northern Neck Peninsula in the Chesapeake Bay region of Virginia. It is bounded on the north by the Potomac River and on the south by the Rappahannock River.

Colonial Beach, a well-known resort town is in the county, offering 2 miles of sandy beaches, a fishing pier and camp sites. Westmoreland State Park is along the banks of the Potomac and offers an expansive beach, too.

Historical attractions in the county include George Washington's Birthplace National Monument and the ancestral home of Robert E. Lee, Stratford Hall. Five Civil War battlefield parks and other homes associated with George Washington dot the landscape.

Mary Washington College is a cultural center offering concerts and theater productions open to the public. Ingleside Plantation Winery and Westmoreland Berry Farm are open for tours and tastings, too.