Wicomico River (Potomac River tributary)

Rock Point is an unincorporated community and census-designated place in Charles County, Maryland, United States.

Ocean Hall is a historic house located in Bushwood, St. Mary's County, Maryland, U.S. The house is believed to have been built in 1703. Successive alterations were made to the initial structure in the early 18th, late 19th and early 20th centuries, when the exterior porches were added. Of the original house only the Flemish bond brick exterior walls remain. It is believed that when the interior was rebuilt (or extensively altered) about 1725, the floor plan configuration was a hall and parlor, a two-room plan typical of this region throughout the early 18th centuries. Decorative details include paneling, molded chair-rails, and a Federal mantel. Ocean Hall was listed on the National Register of Historic Places in 1973.

Cobb Island is a small island located at the confluence of the Potomac and Wicomico rivers in southern Charles County, Maryland, United States. It is located approximately 45 miles (72 km) south of Washington, and is considered to be within the Washington, D.C. MSA. Cobb Island is separated from the mainland by Neale Sound and connected to it by a 0.11-mile-long (180 m) fixed bridge carrying Maryland Route 254. Cobb Island is an unincorporated community and census-designated place (CDP). As of the 2010 census, the CDP had a population of 1,166. The community has a small post office, a volunteer fire department and rescue squad, a Baptist church, a large community green space (Fisherman's Field) and a small playground for children. Commercially, there are two seafood restaurants with marinas, a marina with a pizzeria restaurant chain, a small bar and grill, a seasonal coffee shop, art gallery and bakery, and a small market.

The Cobb Point Bar Light (also called Cobb Island Bar Light) was a screw-pile lighthouse located in the Potomac River.

Maddox is an unincorporated community in St. Mary's County, Maryland, United States.

Bushwood is an unincorporated community in what is familiarly called the "Seventh District" of St. Mary's County, Maryland, United States. Ocean Hall was listed on the National Register of Historic Places in 1973. The ZIP Code for Bushwood is 20618.

Bachelor's Hope is a historic home located at Chaptico, St. Mary's County, Maryland, listed as probably built between 1753 and 1790. It is known for the two-story brick central block with a jerkinhead roof, which contains one large ground-floor room. On either side are one-story, two-room brick wings. No other known 18th century structure in the state exists with a similar combination of the "Great Hall" plan, facade, and component features. It was listed on the National Register of Historic Places in 1972.

Avenue is an unincorporated community in what is familiarly called the "Seventh District" of St. Mary's County, Maryland, United States.

Hurry is an unincorporated community in St. Mary's County, Maryland, United States.

Tompkinsville is a populated place in Charles County, Maryland. It was the site of a post office. William J. Frere lived there.

Oakley is an unincorporated community in St. Mary's County, Maryland, United States. The River View (a historic home located in Oakley) was listed on the National Register of Historic Places in 1976.

Abell is an unincorporated community in what is familiarly called the "Seventh District" of St. Mary's County, Maryland, United States. Abell was a brewing ground for many fisherman and farmers in the late 19th century until approximately the late 1950s. Abell was known for its many major ports, and for its deep water access which made it easy for large steamboats to maneuver. Many of the ports have been demolished due to storms and hurricanes. Today, some local fisherman still reside in the same area where they were raised. Abell is also known for its century-old homes and views of the St. Clements Bay.