The following counties in Maryland have historic locations on the National Register of Historic places. Please select a county in Maryland to see the different historic places in the county.

Allegany County Historic Locations	Anne Arundel County Historic Locations
Baltimore County Historic Locations	Calvert County Historic Locations
Caroline County Historic Locations	Carroll County Historic Locations
Cecil County Historic Locations	Charles County Historic Locations
District of Columbia County Historic Locations	Dorchester County Historic Locations
Frederick County Historic Locations	Garrett County Historic Locations
Harford County Historic Locations	Howard County Historic Locations
Kent County Historic Locations	Montgomery County Historic Locations
New Castle County Historic Locations	Prince George's County Historic Locations
Queen Anne's County Historic Locations	Somerset County Historic Locations
St. Mary's County Historic Locations	Talbot County Historic Locations
Washington County Historic Locations	Wicomico County Historic Locations
Worcester County Historic Locations