Area code 540

North American telephone area code 540 serves the northwestern and southwestern portions of the Commonwealth of Virginia, including the communities of

Buchanan, Buena Vista, Cave Spring, Floyd County, Fredericksburg, Franklin County, Giles County, Greenville, Harrisonburg, King George, Lexington, Madison, Montgomery County, Pulaski County, Radford, Roanoke County, Salem, Staunton, Warren, Waynesboro, and Winchester, as well as most of Augusta, Caroline, Culpeper, Stafford, Spotsylvania, Rockbridge, Orange, Louisa, Fauquier, Rappahannock, Rockingham, Clarke County and Shenandoah counties. It also serves western Loudoun County, most of which is in area code 703.

It was established July 15, 1995 as a split from area code 703. It was then itself split on September 1, 2001 to create area code 276.