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St. Mary's County, Maryland
Genealogy, History & Facts

St. Mary's County, Maryland Facts

StMary County

When was St. Mary's County, MD Created?
St. Mary's County was created on January 24, 1637 from as an Original County from unorganized territory (named Potomac County between 1654 and 1658). This county was named for the Virgin Mary, first county named in a colony intended to be a haven for Catholics .

What is the County Seat of St. Mary's County, MD?
The County Seat is located in Leonardtown additionally, the county government website is

What counties are adjacent to St. Mary's County, MD?
Bordering Counties are Calvert County (northeast), Charles County (northwest).

What cities and towns are in St. Mary's County, MD?
Cities and towns located in the County include Leonardtown (incorporated 1858) .

St. Mary's County, MD Vital Records

Where can find St. Mary's County Birth, marriage, Divorce and Death Records?
St. Mary's County vital records can be found at the Maryland Office of Vital Records has copies of birth and death records from August 1898, has marriage records from January 1990 and has divorce records from January, 1992. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Maryland for current fees and application process.

State of Maryland Archives files, stores, and issues certified copies of vital records including Birth certificates from 1898 for Maryland counties and since 1875 for Baltimore City, Death certificates prior to 1969 and Marriage certificates since 1640 for events that occurred in Maryland.

You can also order Order Electronically Online or You can download an application for Maryland Birth Certificate, Marriage Certificate, Divorce Verification, Death Certificate Applications to mail.

St. Mary's County, MD Census Records

What St. Mary's County, MD census records are available?
There are many types of census records for St. Mary's County guide you in researching your family tree. Federal Population Schedules are available for 1790, 1800, 1810, 1820, 1830, 1840, 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

St. Mary's Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. St. Mary's Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. St. Mary's Co. Union Veterans Schedules is available for 1890.

Another state census is the Maryland Colonial Census of 1776. There is free down-loadable and also printable census forms to help you with your research. See Also Maryland Census Records Research Guide.

St. Mary's County, MD Courthouse and Government Records

St. Mary's County Courthouse

What genealogical records can I find in the St. Mary's County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in St. Mary's County. The years listed below are the first noted records with this county. See Also Maryland Corthouse Records Research Guide.

St. Mary's County, MD Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for St. Mary's County, MD?
A list of St. Mary's County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Maryland Archives, Historical & Genealogical Societies.

Where can I connect with other St. Mary's County, MD Researchers through message boards and forums?

What other genealogical resources are available in St. Mary's County, MD?
The following are web links to Genealogy, Records and Resources pertaining to St. Mary's County. A majority of these genealogy links fall into 3 categories: Business Sites, Personal Sites or Organization Sites. Some have free access some have to have a payment. This is simply a listing that has been gathered or submitted. I do not recommend or promote one genealogy site above another.

St. Mary's Co. MD Books, Newspapers & Publications

St. Mary's Co. MD Cemeteries & Church Records

St. Mary's Co. MD Family Websites, Pictures & Histories

St. Mary's Co. MD General and History Websites

St. Mary's Co. MD Immigration & Naturalization

St. Mary's Co. MD Maps, Atlases & Gazetteers

St. Mary's Co. MD Military Records

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