St. Paul's School for Boys is an Episcopal, coed, private school located in Brooklandville, Maryland. It occupies a 120-acre (0.49 km2) rural campus in the Green Spring Valley Historic District, ten miles (16 km) north of the city of Baltimore in suburban Baltimore County.

Brooklandville is an unincorporated community in Baltimore County, Maryland, United States near the intersection of Jones Falls Expressway and the Baltimore Beltway. The general area is a part of Lutherville, and some addresses in the area are considered to be in Lutherville, though Brooklandville has a postal zone and post office of its own. Some notable landmarks in the area, including the Park School of Baltimore and St. Paul's Schools are technically within Brooklandville, as noted by their mailing addresses. However, addresses within the main office complex in the area, Green Spring Station, are considered to be within Lutherville.