This is a list of properties

Property type (National Register of Historic Places)

The U.S. National Register of Historic Places classifies its listings by various types of properties. Listed properties generally fall into one of five categories, though there are special considerations for other types of properties which do not fit into these five broad categories or fit into...

 and districts

Historic district (United States)

In the United States, a historic district is a group of buildings, properties, or sites that have been designated by one of several entities on different levels as historically or architecturally significant. Buildings, structures, objects and sites within a historic district are normally divided...

 listed on the National Register of Historic Places in Maryland. There are approximately 1,500 listed sites in Maryland

Maryland

Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

. Each of the state's 23 counties and its one county-equivalent (the independent city of Baltimore) has at least 17 listings on the National Register

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

.

Current listings by county

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.

County # of Sites 1 Allegany National Register of Historic Places listings in Allegany County, Maryland This is a list of the National Register of Historic Places listings in Allegany County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Allegany County, Maryland, United States... 44 2 Anne Arundel National Register of Historic Places listings in Anne Arundel County, Maryland This is a list of the National Register of Historic Places listings in Anne Arundel County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Anne Arundel County, Maryland, United States... 101 3 Baltimore (city) 278 4 Baltimore County National Register of Historic Places listings in Baltimore County, Maryland This is a list of the National Register of Historic Places listings in Baltimore County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Baltimore County, Maryland, United States... 84 5 Calvert National Register of Historic Places listings in Calvert County, Maryland This is a list of the National Register of Historic Places listings in Calvert County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Calvert County, Maryland, United States... 20 6 Caroline National Register of Historic Places listings in Caroline County, Maryland This is a list of the National Register of Historic Places listings in Caroline County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Caroline County, Maryland, United States... 20 7 Carroll National Register of Historic Places listings in Carroll County, Maryland This is a list of the National Register of Historic Places listings in Carroll County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Carroll County, Maryland, United States... 61 8 Cecil National Register of Historic Places listings in Cecil County, Maryland This is a list of the National Register of Historic Places listings in Cecil County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Cecil County, Maryland, United States... 51 9 Charles National Register of Historic Places listings in Charles County, Maryland This is a list of the National Register of Historic Places listings in Charles County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Charles County, Maryland, United States... 37 10 Dorchester National Register of Historic Places listings in Dorchester County, Maryland This is a list of the National Register of Historic Places listings in Dorchester County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Dorchester County, Maryland, United States... 24 11 Frederick National Register of Historic Places listings in Frederick County, Maryland This is a list of the National Register of Historic Places listings in Frederick County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Frederick County, Maryland, United States... 95 12 Garrett National Register of Historic Places listings in Garrett County, Maryland This is a list of the National Register of Historic Places listings in Garrett County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Garrett County, Maryland, United States... 20 13 Harford National Register of Historic Places listings in Harford County, Maryland This is a list of the National Register of Historic Places listings in Harford County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Harford County, Maryland, United States... 79 14 Howard National Register of Historic Places listings in Howard County, Maryland This is a list of the National Register of Historic Places listings in Howard County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Howard County, Maryland, United States... 38 15 Kent National Register of Historic Places listings in Kent County, Maryland This is a list of the National Register of Historic Places listings in Kent County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Kent County, Maryland, United States... 40 16 Montgomery National Register of Historic Places listings in Montgomery County, Maryland This is a list of the National Register of Historic Places listings in Montgomery County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Montgomery County, Maryland, United States... 74 17 Prince George's National Register of Historic Places listings in Prince George's County, Maryland This is a list of the National Register of Historic Places listings in Prince George's County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Prince George's County, Maryland, United States... 92 18 Queen Anne's National Register of Historic Places listings in Queen Anne's County, Maryland This is a list of the National Register of Historic Places listings in Queen Anne's County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Queen Anne's County, Maryland, United States... 37 19 Somerset National Register of Historic Places listings in Somerset County, Maryland This is a list of the National Register of Historic Places listings in Somerset County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Somerset County, Maryland, United States... 73 20 St. Mary's National Register of Historic Places listings in St. Mary's County, Maryland This is a list of the National Register of Historic Places listings in St. Mary's County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in St. Mary's County, Maryland, United States... 31 21 Talbot National Register of Historic Places listings in Talbot County, Maryland This is a list of the National Register of Historic Places listings in Talbot County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Talbot County, Maryland, United States... 61 22 Washington National Register of Historic Places listings in Washington County, Maryland This is a list of the National Register of Historic Places listings in Washington County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Maryland, United States... 98 23 Wicomico National Register of Historic Places listings in Wicomico County, Maryland This is a list of the National Register of Historic Places listings in Wicomico County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Wicomico County, Maryland, United States... 22 24 Worcester National Register of Historic Places listings in Worcester County, Maryland This is a list of the National Register of Historic Places listings in Worcester County, Maryland.This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Worcester County, Maryland, United States... 32 (duplicates) (19) Total: 1,493