The Anne Arundel Genealogical Society was established in 1974 to promote genealogical and family history research in Anne Arundel County, and to help its members learn about genealogy and apply that knowledge to their family history research. The Society offers its members a quarterly newsletter, Speaks, and access to additional information on Anne Arundel County genealogy through Readings Online on its website. The Society holds monthly meetings open to the public on the first Thursday of each month at the Severna Park United Methodist Church. The Kuethe Library Historical and Genealogical Research Center, located at 5 Crain Highway, S.E. in Glen Burnie includes the holdings of both the Anne Arundel Genealogical Society and the Ann Arrundell County Historical Society. Although specializing in Anne Arundel County and Maryland material, its more than 4,000 volumes encompass the eastern and central states, as well as some western material. The Kuethe Library holdings are now listed in the Anne Arundel County Public Library catalog.

The Society was founded in 1977 to help educate members in tracing their family ancestry, to collect and publish material related to genealogy, and to encourage the open exchange of genealogical ideas and experiences. The BCGS collects and maintains substantial materials for both Baltimore County and City. Meetings are open to the public and are held on the fourth Sunday of the months of September through June (except December), from 12:00 p.m. to 4:00 p.m. at their headquarters at 8601 Harford Road.

The Carroll County Genealogical Society, Inc. was founded in 1981 to stimulate interest in genealogy and educate the membership and general public in proper and ethical methods of genealogical research and gathering, recording and disseminating genealogical and historical information. Meetings are held the third Monday of each month, except January, February, July and August, at the Westminster Branch Library at 50 East Main Street, Westminster, Maryland. The public is always welcome. The Society's collection is also housed at the Westminster Branch Library.

The Society's mission is to encourage participation from family and social historians, to help promote their appreciation and knowledge of genealogical and historical research, to offer and encourage continual education for family history and it compilation of information, to stimulate proper research methods, and promote high standards of accuracy and to preserve and disseminate genealogical information. FRECOGS has been in existence since the mid-1970s.

The Harford County Genealogical Society ceased operations in 2014, but its website remains online and provides links to data and information of interest.

Begun in 1979, the Howard County Genealogical Society, Inc. is a non-profit organization founded to aid and encourage the study of family history, to preserve and collect genealogical records, and to assist local libraries in developing their genealogical collections.

Lower Delmarva Genealogical County The organization's purpose is to create and build interest in preserving and collecting historical records of the Lower Delmarva Peninsula, to take an active part in collecting records and making them available for others to use, and to share ideas and information on genealogical research. The Lower DelMarVa Peninsula includes parts of: Kent and Sussex Counties, Delaware, Dorchester, Wicomico, Somerset and Worcester Counties, Maryland, and Northampton and Accomack Counties, Virginia.

The Montgomery County Genealogical Society is organized to promote interest and proficiency in genealogical research and to make available records of interest to genealogists. The main focus of the Society is to help researchers develop skills and become aware of sources that can be used wherever their ancestors lived. There are regular monthly meetings with informative speakers, and the Society offers assistance with research questions pertaining to genealogy and other historical topics.

The Prince George's County Genealogical Society, founded in 1969, is the oldest Maryland County Genealogical Society in continuous existence. Its objectives are to collect, preserve, and disseminate genealogical knowledge and information, particularly that material that deals with Prince George's County, Maryland. The Society meets at the New Carrollton Municipal Center the first Wednesday of every month at 7 p.m. except in July, August, or January.

The St. Mary's County Genealogical Society, Inc. is a nonprofit organization committed to the promotion and encouragement of interest in the science of genealogical and historical research. This includes active participation in the preservation and maintenance of records of genealogical and historic interest in St. Mary's County, to promote their availability to the public, to maintain surname files, printed materials, and publications at local libraries for use by patrons, and to maintain liaison with and offer advice and assistance to local librarians regarding genealogy-related services. The society's files and printed holdings are presently maintained in the reference room at the St. Mary's County Memorial Library in Leonardtown, Maryland. The society publishes a periodical, the GENERATOR, which is mailed four times yearly. The GENERATOR includes articles regarding the science of genealogy, publication of records of interest to persons researching St. Mary's County, and the society's schedule of events

The goal of The Upper Shore Genealogical Society of Maryland is to discover, collect and disseminate data and records significant to history and family research. Serving as the focal point for genealogical activities in the counties of Caroline, Dorchester, Kent, Queen Anne's , and Talbot, the USGS is an important link in the exchange of information between resident and non-resident family researchers.