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St Mary's County


Maryland's Mother County

Facts & Information

The Cities and communities of St Mary's County, Maryland *


Beachville-St Inigoes, Bushwood

California, Callaway, Chaptico-Maddox, Charlotte Hall, Clements, Coltons Point

Dameron, Drayden

Golden Beach, Great Mills

Helen, Hollywood

Leonardtown (County Seat), Lexington Park, Loveville

Mechanicsville, Morganza

Park Hall, Piney Point


St. Inigoes, St. Mary's City, Scotland

Tall Timbers

Valley Lee

*This list of cities may not be complete. The list may contain towns, cities, villages, boroughs, townships, ghost towns and other populated places.

If you have information about any of these unlinked communities or have a community not listed at all, please send it to us and we will add a page for that community. Some of these places above may only be neighborhoods or local area names and are not listed with the census at all or just included in a larger surrounding designated census area..

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Information & Facts about St Mary's County, Maryland

Attractions & other Information - Climate - Economy - Genealogy - Geography -
Government - History - Libraries - Location - Organizations & Groups -
Other Facts & Figures - Population - Schools


St. Mary's County Official Website

St. Mary's County Sheriff's Office

St Mary's County is governed by a Board of County Commissioners. The board consists of five members who are elected every four years. This type of government is the traditional form for the counties in this state.

Leonardtown is the county seat. It is the oldest county seat in the United States having been founded in 1708. Leonardtown was the first town incorporated in the United States and is St. Mary's County's only incorporated town.

Government information for St. Mary's County

Naval Air Station Patuxent River
This facility includes the Naval Air Systems Command. There is also an annex at Webster Field in St. Inigoes.

See the County Seal and the County Flag

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1940 - 14,626
1990 - 75,974
1995 - 80,856
2000 - 86,211

2000 - 238 persons per square mile

Housing Units:
2000 - 34,081

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The county is mostly surrounded by water.

Neighboring areas:
North: Patuxent River
Northeast: Calvert County
East: Chesapeake Bay
South: Potomac River
West: Wicomico River
Northwest: Charles County

Here is a map & directions page for the county

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The general climate within the county is considered to be humid subtropical. The amount of water surrounding the county greatly influences the weather. Summers tend to be hot and humid with afternoon thunderstorms occuring often. Winters are mild and cool with goodly amounts of rainfall.

Average summer temperature: 74 degrees F.
Average winter temperature: 37 degrees F.

Average Annual Precipitation: 40.47 inches
Average Annual snowfall: 17.8 inches

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Other Facts and Figures:

Median Household Income:
2000 - $54,706

Per Capita Income:
2000 - $22,662

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When George and Leonard Calvert arrived at St. Clement's Island in March of 1634, the settling of the state began right here in what would be St. Mary's County. This is why the county is known as the birthplace of Maryland. Soon the ships moved further south and bought land from the Yaocomaco Indians. The new settlers fit in well with the local tribe who helped them while they were getting situated. The first area became St. Mary's City which was the first state capital of Maryland. The capital was later moved to Annapolis. Tobacco quickly became a major crop and many farmers prospered and bought more land and built up large plantations.

St. Mary's, the first Maryland county, was established in 1637, probably by an order of the Governor. The county was named for Mary, the mother of Jesus.

Here is a good history page for St. Mary's County.
This is a history overview page for St. Mary's County
A history page for St. Mary's County

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Total area: 764 square miles
Total land area: 373 square miles
Total water area: 403 square miles

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St. Mary's County GenWeb page
A Genealogy page for the county
The Political Graveyard for St. Mary's County
Cemeteries of St. Mary's County
Register of Wills for St. Mary's County

St. Mary's County Genealogical Society

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St. Mary's County Library
Leonardtown Branch
23250 Hollywood Road
Leonardtown, MD 20650
Phone: 301-475-2846

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St. Mary's County Public Schools
23160 Moakley Street
Leonardtown, MD 20650
Phone: 301-475-5511

College of Southern Maryland
St. Mary's College of Maryland

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Department of Economic & Community Development
23115 Leonard Hall Drive
Leonardtown, MD 20650
Phone: 301-475-4200 ext.1400

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Organizations & Groups

St. Mary's County Chamber of Commerce
44200 Airport Road
California, MD 20619
Phone: 301-737-3001

St Mary's County Division of Tourism
23115 Leonard Hall Drive
P.O. Box 653
Leonardtown, MD 20650

Toll-free: 1-800-327-9023

Southern Maryland Tourism

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Attractions & Other Information

Point Lookout State Park Lighthouse & Civil War Museum
11175 Point Lookout Road
Scotland MD 20687
Phone: 301-872-5688

Old Jail Museum
41680 Tudor Place
Leonardtown MD 20650

Patuxent River Naval Air Museum
22156 Three Notch Road
Lexington Park MD 20653
Phone: 301-863-7418

Piney Point Lighthouse, Museum and Historic Park
44701 Lighthouse Road
Piney Point MD 20674
Phone: 301-769-2222

Cecil's Mill Historic District
20853 Indian Bridge Road
Great Mills MD 20634
Phone: 301-994-1510

Sotterley Plantation
P. O. Box 67
44300 Sotterley Lane
Hollywood MD 20636
Phone: 301-373-2280

St. Clements Island Museum
38370 Point Breeze Road
Colton's Point MD 20626
Phone: 301-769-2222

Monuments and Landmarks in the County

COSMIC (Chamber Orchestra of Southern Maryland, in Concert)
P.O. Box 1323
California, MD 20619
Phone: 301-373-5277

State Parks in the County

National Oyster Shucking Contest
held each October during the St. Mary's County Oyster Festival

Stuffed Ham
This is St Mary's County own dish!
It is a mixture of cabbage, kale, onions and spices that are stuffed into a corned ham.

The county has an Amish community of about 350 families. They arrived here from Pennsylvania in the 1930s.

Historic St. Mary's City
Historic St. Mary’s City
St. Mary’s City
Toll-free: 1-800-762-1634
Explore Historic St. Mary’s City where you will find yourself transported back to the 17th century when St. Mary’s City was the colony’s capital.

Patuxent River Naval Air Museum
Patuxent River, MD
Phone: 301-863-7418

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This page was last updated on 1 May 2009 at 12:44 pm

This page was created 12 July 2003