Saint Mary s County (Saint Mary's County), Maryland

Saint Mary s County: County in Maryland, United States

About

Saint Mary's County is a county located in the U.S. state of Maryland. As of the 2010 census, the population was 105,151 and a population density of 66 people per km². After 10 years in 2020 county had an estimated population of 114,687 inhabitants. Its county seat is Leonardtown. The county was created 388 years ago in 1636.

Saint Mary's County locator map
Location of Saint Mary's County on Maryland map.

Quick Facts about Saint Mary's County

Population : 114,687 (2020)
Country : United States of America
State : Maryland (United States)
Different from : St. Mary Parish
Area : 1582 km2
Water as percent of area : 53%
Land as percent of area : 47%
Named for : Virgin Mary
Altitude : 112 feet / 34 meters
Capital : Leonardtown
Establishment : January 01, 1637
Time Zone : America/New_York
Local time : 11:53:26 (22nd February 2025)
Density : 72 Pop. per km² as of 2020
Population growth : 8.31% (2010-2020)
Rebuilt Blackistone Lighthouse View 1 Sept 09 image
Rebuilt Blackistone Lighthouse View 1 Sept 09
Rebuilt Blackistone Lighthouse View 1 Sept 09 image
Rebuilt Blackistone Lighthouse View 1 Sept 09 image

Geography

Saint Mary's County is located at 38°12'57"N 76°31'45"W (38.2158600, -76.5290600). It has 6 neighbors: Calvert County, Charles County, Dorchester County, Somerset County, Northumberland County and Westmoreland County.

Saint Mary s County map

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Saint Mary's County Populated Places

Cities, towns, neighborhoods & other populated places in Saint Mary's County.

City Name Population Title
Lexington Park 11,626 Census designated place
Leonardtown 3,912 Town in Maryland, United States
Golden Beach 3,796 Town of the United States
Charlotte Hall 1,420 Census designated place

Saint Mary's County has 6 neighbours.

Demographics

The population of Saint Mary's County increased by 8.31% in 10 years.

Year Population % Change Method
2010 105,151 - census
2011 107,566 2.25% estimation process
2012 108,800 1.13% estimation process
2013 109,224 0.39% estimation process
2014 109,913 0.63% estimation process
2015 110,985 0.97% estimation process
2016 111,750 0.68% estimation process
2017 112,487 0.66% estimation process
2018 112,720 0.21% estimation process
2019 113,510 0.7% estimation process
2020 114,687 1.03% estimation process

Augusta Caroline County, Comte de Saint Mary's, Comté de Saint Mary's, Potomack County, Saint Maries Countie, Saint Maries County, Saint Mary County, Saint Mary's, Saint Mary's County, Saint Maryes County, Saint Marys County, XSM

People born in Saint Mary's County (17)

People born in Saint Mary's County, including Catholic bishop Edward Fenwick, politician Philip Key, politician Raphael Neale, .

List

  • John Causin (American politician (1811-1861)) he was born in 01/01/1811
  • Bennett C. Riley (United States Army general and politician (1790-1853)) he was born in 01/01/1790
  • Uriah Forrest (American politician, mayor of Georgetown (1746-1805)) he was born in 01/01/1746
  • James Thomas (American politician (1785-1845)) he was born in 11/03/1785
  • Robert Gilmor Jr. (shipowner and art collector (1774–1848)) he was born in 24/09/1774
  • George Cooke (American painter (1793-1849)) he was born in 17/03/1793
  • Charles Henry Wharton (President of Columbia University) he was born in 05/06/1748
  • James H. Harris (United States Army Medal of Honor recipient) he was born in 01/01/1828
  • John L. Bohanan, Jr. (American politician) he was born in 12/09/1958
  • Richard Henry Alvey (United States federal judge) he was born in 06/03/1826
  • William H. Barnes (United States Army Medal of Honor recipients) he was born in 01/01/1840
  • William K. Bond (American politician) he was born in 02/10/1792
  • Mary Kittamaquund (Piscataway diplomat) she was born in 01/01/1601
  • Enoch Fenwick (American Jesuit priest) he was born in 15/05/1780

Maryland Other Counties (more counties)

County Name Population Title
Essex 1,832,752 Census-designated place in Maryland, United States
Montgomery County 1,051,816 County in Maryland, United States
Prince George's County 909,612 County in Maryland, United States
Baltimore County 826,017 County in Maryland, United States
City of Baltimore 621,849 Independent city in Maryland, United States
Baltimore 586,131 The thirty-first most populous city in the United States and the center of the Baltimore metropolitan area.
Anne Arundel County 582,777 County in Maryland, United States
Howard County 328,200 County in Maryland, United States
Frederick County 265,161 County in Maryland, United States
Harford County 256,805 County in Maryland, United States
Carroll County 169,092 County in New Hampshire, United States
Charles County 164,436 County in Maryland, United States
Washington County 151,146 County in Maryland, United States
Redland 147,010 A census-designated place in Prince George's County, Maryland.
Wicomico County 103,990 County in Maryland, United States
Cecil County 103,419 County in Maryland, United States