New Baltimore is an unincorporated community and census-designated place (CDP) in eastern Fauquier County, Virginia, United States.

It is the portion of Fauquier County with the easiest access to Washington, D.C., and as a result, many people who live in New Baltimore commute into DC.

[3][4] McClellan's headquarters was in the front yard of the New Baltimore home and farm of Julia F. Claggett along the Alexandria Turnpike and Georgetown Road.

"[5][6] A brigade of General William B. Franklin's VI Corps, totaling about 3,000 troops, camped on the Claggett's 273 acres (110 ha) farm during the fall of 1862.

The soldiers appropriated food stores and supplies, seized horses, hogs, and cattle, cut down 40 acres (16 ha) of woodland, tore down barns and fences for fuel and torched what remained.

[5] Later in the war the second brigade of the 27th New York Volunteer Infantry commanded by General Joseph Jackson Bartlett was encamped in New Baltimore from July 31, 1863 through September 15, 1863.

On September 4, Confederate Captain Frank Stringfellow led 20 soldiers in a raid in an attempt to capture Bartlett whose headquarters were in Claggett's door yard.

The original central point of the town, James Hampton's Tavern (built 1823), still stands at the intersection of Old Alexandria Turnpike and Georgetown Road, and is currently a private residence.