The Middlesex Genealogical Society is located in the town of Darien, which is in Fairfield County, Connecticut, not far from New York City. Membership is open to all interested in family research, regardless of where they live.

The Middlesex Genealogical Society was established in 1982 for the purpose of encouraging those interested in researching their family history and to provide guidance to that end. The Society does not limit its focus to Darien or Fairfield County. It provides assistance for all researchers, wherever their ancestry leads.

The name is derived from Middlesex Parish, the original name by which Darien, Connecticut, was known before becoming incorporated in 1820. The group's founders were from Darien and chose "Middlesex" to honor the town.

The Society holds five program Meetings during the year at the Darien Library, presenting speakers on various topics of interest to all genealogists. In addition, the Society maintains a small research Library at the Darien Library, and volunteers are available, by appointment, to help with research problems, or just to get you started.

A Newsletter is published quarterly.

The Society has a subscription to Ancestry.com which is available to members on a dedicated computer at the Darien Library.

The Society is registered with the State of Connecticut, thereby giving members access to vital records at town and city record offices in Connecticut.