National_Register_of_Historic_Places_listings_in_Maryland
There are more than 1,500 properties and districts listed on the National Register of Historic Places in the U.S. State of Maryland. Each of the state's 23 counties and its one county-equivalent (the independent city of Baltimore) has at least 20 listings on the National Register.
This National Park Service list is complete through NPS recent listings posted April 12, 2024.[1]