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Middlesex County Connecticut Genealogy and History

Founded: May, 1785

Named for: Middlesex, England

County Seat: none (since 1960), Middletown (before 1960)

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Search Free Middlesex County Connecticut Genealogy and Family History Records Online including census, cemetery, vital, military and other genealogical and historical records that can be used for your family history research.

Middlesex County, Connecticut genealogy and family history page is a place where you can come in and research your genealogy and family history. We also do our best to provide a history of the area, to provide you with an overview of the time in which your ancestors lived.

We regret that we are unable to do personal research for you. All genealogical and family history records we come across are being added to this website. Please keep checking back.


Middlesex County was incorporated by an act of the Legislature passed at the May session, 1785, and at that time consisted of six towns. Of these, Middletown, Chatham, Haddam, and East Haddam were taken from the county of Hartford, and Saybrook and Killingworth from New London county. Durham was annexed to the county in May 1799, from the county of New Haven. New towns have been erected from the original six till the number is now fifteen. From the first Middletown and Haddam have been half shire towns, and public buildings have been erected and maintained in each.

Free Middlesex County Connecticut Genealogy Records Online

Middlesex County Connecticut Biographies and Biographical Sketches

Middlesex County Connecticut Cemetery Records

Middlesex County Connecticut Church Records

Middlesex County Connecticut Cities & Towns

Middlesex County Connecticut Early Settlers

History of Middlesex County Connecticut and it's early settlers

Middlesex County Connecticut Military Records

Middlesex County Connecticut Newspapers

Middlesex County Connecticut Obituaries

Middlesex County Connecticut Vital Records

Middlesex County Connecticut Wills/Probate Records

Genealogical Research in Middlesex County, Connecticut

Connecticut Counties do not have a county government, the government is at the town level.

Town Clerks have birth, marriage, death and land records

Clerk of the Superior Court has divorce and court records from 1800

Probate Court has probate records.

Middlesex County Historical Society
151 Main Street
Middletown, CT 06457
Phone: (860) 346-0746

Russell Library
123 Broad St.
Middletown CT 06457
Phone: (860) 347-2520

Adjacent counties