White Marsh is an unincorporated community and census-designated place in Baltimore County, Maryland, United States.

In 1965, the largely undeveloped northeast corridor was identified by Baltimore County as the preferred site for intensive development.

A town center was proposed to be located west of Belair Road at the planned intersection of White Marsh and Walther Boulevards.

The Harry T. Campbell Sons Corporation owned thousands of acres of land to the east of the planned town center, on both sides of Interstate 95.

A new family-owned entity was charged with rejuvenating the family's property in northeast Baltimore County, which was covered with deep craters and pits.

In January 1943, the Cowenton Volunteer Fire Company was founded to counter the threat of incendiary bombings from the Axis Powers during the ongoing Second World War.

From the first, the intent was to incorporate a variety of land uses and community services, including residential, retail, business, and industrial.

The County agreed to move the planned town center east, to be developed on 1,500 acres (610 ha) of the Campbell land.

A residential sector was designated to the north, between Silver Spring Road and the planned White Marsh Boulevard.

[citation needed] Nearby suburbs include Perry Hall to the north, Rosedale to the southwest, Middle River to the south and Parkville to the west.