National Register of Historic Places listings in Maryland

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Maryland counties
Maryland counties

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 February 23, 2024.[1]

Current listings by county[edit]

The following are approximate tallies of current listings in Maryland on the National Register of Historic Places. These counts are based on entries in the National Register Information Database as of April 24, 2008[2] and new weekly listings posted since then on the National Register of Historic Places web site.[3] There are frequent additions to the listings and occasional delistings, and the counts here are not official. Also, the counts in this table exclude boundary increase and decrease listings which modify the area covered by an existing property or district and which carry a separate National Register reference number.

Bostwick, Prince George's County
Emerson Bromo-Seltzer Tower, Baltimore City
St. Clement's Island Historic District, St. Mary's County
County # of sites
1 Allegany 46
2 Anne Arundel 106
3 Baltimore (city) 307
4 Baltimore County 91
5 Calvert 20
6 Caroline 24
7 Carroll 62
8 Cecil 53
9 Charles 39
10 Dorchester 30
11 Frederick 102
12 Garrett 20
13 Harford 80
14 Howard 43
15 Kent 44
16 Montgomery 81
17 Prince George's 106
18 Queen Anne's 39
19 Somerset 73
20 St. Mary's 32
21 Talbot 62
22 Washington 103
23 Wicomico 24
24 Worcester 34
(duplicates) (27)[4]
Total: 1,592
Casselman's Bridge, National Road, Garrett County
Brunswick Historic District, Frederick County
Nassawango Iron Furnace Site, Worcester County
St. Mary's Roman Catholic Church, Newport, Charles County

See also[edit]


  1. ^ National Park Service, United States Department of the Interior, "National Register of Historic Places: Weekly List Actions", retrieved February 23, 2024.
  2. ^ "National Register Information System". National Register of Historic Places. National Park Service. April 24, 2008.
  3. ^ "National Register of Historic Places: Weekly List Actions". National Park Service. Retrieved January 2, 2009.
  4. ^ The following sites are listed in multiple counties: Chesapeake and Ohio Canal National Historical Park (Allegany, Frederick, Montgomery and Washington), Dundalk Historic District (Baltimore (city) and Baltimore County), Hopewell (Carroll and Frederick), Inns on the National Road (Allegany and Garrett), Jericho Covered Bridge (Baltimore and Harford), James Lawrence Kernan Hospital (Baltimore (city) and Baltimore County), McKinstry's Mills Historic District (Carroll and Frederick), Mount Airy Historic District (Carroll and Frederick), My Lady's Manor (Baltimore and Harford), Old National Pike Milestones (Alleghany, Baltimore (city), Baltimore County, Carroll, Frederick, Howard and Washington), Patterson Viaduct Ruins (Baltimore and Howard), Thomas Viaduct, Baltimore & Ohio Railroad (Baltimore and Howard), Western Maryland Railroad Right-of-Way, Milepost 126 to Milepost 160 (Alleghany and Washington), Wye Mill (Queen Anne's and Talbot). Delaware Boundary Markers appear in seven counties.