Barstow is a small, rural unincorporated community

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in Calvert County, Maryland

Calvert County, Maryland

Calvert County is a county located in the U.S. state of Maryland. It occupies the Calvert Peninsula which is bordered on the east by the Chesapeake Bay and on the west by the Patuxent River. Calvert County is part of the Southern Maryland region. Calvert County's residents are among the highest...

 located immediately west of Prince Frederick

Prince Frederick, Maryland

Prince Frederick is a census-designated place in Calvert County, Maryland, United States, not to be confused with the incorporated, and much larger, city of Frederick some to the northwest in Frederick County...

. The community maintains its own separate zip code, 20610.

The new Calvert County Fairgrounds are located in Barstow, moving from their original location in central Prince Frederick

Prince Frederick, Maryland

Prince Frederick is a census-designated place in Calvert County, Maryland, United States, not to be confused with the incorporated, and much larger, city of Frederick some to the northwest in Frederick County...

 in the late 1990s. A branch of College of Southern Maryland

College of Southern Maryland

The College of Southern Maryland in La Plata, Maryland, is a public, regional community college, serving Southern Maryland Charles County, St. Mary's County, and Calvert County.-History:...

 is very close by.

Cedar Hill

Cedar Hill (Barstow, Maryland)

Cedar Hill is a historic home located on at Barstow, Calvert County, Maryland, United States. It is one of the few remaining cruciform dwelling houses existing in Maryland, built in the 18th century that is typical of 17th century architecture. It is a -story house with a 2-story porch tower,...

 and Willow Glenn

Willow Glenn

Willow Glenn is a historic home located at Barstow, Calvert County, Maryland, United States. It is an impressive, Georgian structure of grand proportions; constructed entirely of brick in Flemish bond with random glazed headers...

 were listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

in 1973.