page_title: National Register of Historic Places listings in Maryland
section_title: Current listings by county
hierarchical_section_title: National Register of Historic Places listings in Maryland / Current listings by county
caption_attribution_description: English: View of blast tubes at Nassawango Iron Furnace near Snow Hill, Maryland, USA Français&#160;: Four à fer Nassawango, Maryland, États-Unis
context_page_description: 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 has at least 20 listings on the National Register.
  This National Park Service list is complete through NPS recent listings posted March 27, 2020.
context_section_description: 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, and new weekly listings posted since then on the National Register of Historic Places web site. 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.
caption: Nassawango Iron Furnace Site, Worcester County
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