Vital records like birth, marriage, and death certificates may be accessed at Darien Town Hall. You need to be a member of a Connecticut genealogy society to access vital records at town and city records within the state. Probate and Land Records are also available in the Town Clerk's office.
Visit the Darien USGenWeb Project page. It includes listings on where to find local historical records, cemeteries, libraries, historical societies, historical information, newspapers, churches, old photos, census records, and books about Darien.
Godfrey Memorial Library is a major repository of genealogical materials for Connecticut. They also collect individual family histories. The Library is located in Middlesex, CT which is about 75 minutes away.
Look up historical local news using the microfilm machines located on the Second Level. Newspaper archives available at Darien Library: