White Plains is an unincorporated community located in Charles County, Maryland, in the United States, just south of Waldorf. It is located at latitude 38°35'25" North; longitude 76°56'26" West. While the commercial portion of White Plains lies along U.S. Route 301, the largest concentration of residences with the White Plains mailing address is actually six to seven miles to the west in developments located near Billingsley Road (see the article Bryans Road, Maryland). The area is experiencing population sprawl from the adjacent unincorporated communities of Waldorf and St. Charles, features new office parks and a scenic new rail trail. The historic home Spye Park was listed on the National Register of Historic Places in 1990.