Norfolk County, Massachusetts

Norfolk County
Images, from top down, left to right: Former residence of John Adams in Quincy; Trail in the Blue Hills Reservation; MBTA station in Brookline; Green Hall at Wellesley College
Flag of Norfolk County
Official seal of Norfolk County
Motto(s): 
Antiquity, Perseverance, History, Industry
Map of Massachusetts highlighting Norfolk County
Location within the U.S. state of Massachusetts
Map of the United States highlighting Massachusetts
Massachusetts's location within the U.S.
Coordinates: 42°11′57″N 71°09′16″W / 42.199158°N 71.154442°W / 42.199158; -71.154442
Country United States
State Massachusetts
Founded1793
Named forNorfolk
SeatDedham
Largest cityQuincy
Area
 • Total444 sq mi (1,150 km2)
 • Land396 sq mi (1,030 km2)
 • Water48 sq mi (120 km2)  11%
Population
 (2020)
 • Total725,981
 • Estimate 
(2023)
727,473 Increase
 • Density1,600/sq mi (630/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional districts2nd, 4th, 7th, 8th
Websitenorfolkcounty.org

Norfolk County (/ˈnɔːrfək/ NOR-fək) is located in the U.S. state of Massachusetts. At the 2020 census, the population was 725,981.[1] Its county seat is Dedham.[2] 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.[3] 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.

  1. ^ "2020 Census Demographic Data Map Viewer". United States Census Bureau. Retrieved August 12, 2021.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ Thomas Cox, Anthony Hall, Robert Morden, Magna Britannia Antiqua & Nova: Or, A New, Exact, and Comprehensive Survey of the Ancient and Present State of Great Britain, Volume 5, (Caesar Ward and Richard Chandler: London, 1738), pg. 171 (accessed on Google Book Search, June 22, 2008)