Norfolk County is located in the U.S. state of Massachusetts. At the 2020 census, the population was 725,981. Its county seat is Dedham. It is the fourth most populous county in the United States whose county seat is neither a city nor a borough, and it is the second most populous county that has a county seat at a town. The county was named after the English county of the same name. Two towns, Cohasset and Brookline, are exclaves. Norfolk County is included in the Boston-Cambridge-Newton, MA-NH Metropolitan Statistical Area. Norfolk County is the 24th highest-income county in the United States with a median household income of $107,361. It is the wealthiest county in Massachusetts. History Norfolk County, Massachusetts was created on March 26, 1793, by legislation signed by Governor John Hancock. Most of the towns were originally part of Suffolk County, Massachusetts. The towns of Dorchester and Roxbury were part of Norfolk County when it was created but, as Boston annexed each town, they became part of Suffolk County again. Hingham and Hull were originally part of the Norfolk County legislation but petitioned to remain in Suffolk county and in June 1793 their removal to Norfolk county was repealed. In 1803, they were moved into Plymouth County, Massachusetts. Norfolk County is the birthplace of four Presidents of the United States (John Adams, John Quincy Adams, John F. Kennedy, and George H. W. Bush), resulting in the moniker "County of Presidents." Sheriffs There have been 21 sheriffs of Norfolk County. Treasurers Registers of Deeds The Registry was originally housed in one of the first floor rooms of the home of Eliphalet Pond, the first registrar, at 963 Washington Street in Dedham. A sign was nailed to a tree out front informing the public of its location. It then moved to the original Norfolk County Courthouse and remained there for about three decades. When the new Norfolk County Courthouse was built in 1827, the middle office on the west side of the lower level was used by the Registry. When the population of the county grew and the number of real estate transactions increased apace, a new building was constructed for the Registry across the street at 649 High Street. The Boston firm Peabody & Stearns was hired to design the current Registry of Deeds, built in 1905. The main section of the building measures 52 feet by 186 feet, is