List of counties in Connecticut

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Counties of Connecticut
LocationState of Connecticut
Populations118,428 (Windham) – 916,829 (Fairfield)
Areas369 square miles (960 km2) (Middlesex) – 920 square miles (2,400 km2) (Litchfield)
  • County government (abolished in 1960, except for County Sheriffs, which were abolished by an act of the state legislature effective in 2000)
Map of the counties of colonial Connecticut, 1766.

There are eight counties in the U.S. state of Connecticut.

Four of the counties – Fairfield, Hartford, New Haven and New London – were created in 1666, shortly after the Connecticut Colony and the New Haven Colony combined. Windham and Litchfield Counties were created later in the colonial era, while Middlesex and Tolland Counties were created after American independence (both in 1785). Six of the counties are named for locations in England, where many early Connecticut settlers originated.[1]

Although Connecticut is divided into counties, there is no county government in Connecticut, and local government exists solely on the municipality level.[2] Almost all functions of county government were abolished in Connecticut in 1960,[3] except for elected county sheriffs and their departments under them. Those offices and their departments were abolished by an act of the state legislature effective in December 2000. The functions the county sheriffs' departments played were assumed by the newly organized State Marshal Commission and the state Department of Corrections.[4]

Connecticut's legacy county names remain for geographical and statistical purposes. Counties serve mainly as dividing lines for the state's judicial and state marshal system. However, the three largest counties–Fairfield, Hartford and New Haven–have been further subdivided into several smaller jurisdictions.[5]

In 2017 the state recommended to the United States Census Bureau that the nine Councils of Governments replace counties for statistical purposes, and the Census intends to implement it in 2023.[6][7]

Alphabetical listing[edit]

FIPS code[8] Seat[b][10] Est.[10] Origin[1] Etymology[11] Population[12] Area[10] Map
Fairfield County 001 Bridgeport 1666 original county From the hundreds of acres of salt marsh that bordered the coast. 957,419 626 sq mi
(1,621 km2)
State map highlighting Fairfield County
Hartford County 003 Hartford 1666 original county After the county of Hertfordshire in the UK 899,498 736 sq mi
(1,906 km2)
State map highlighting Hartford County
Litchfield County 005 Litchfield 1751 From parts of Fairfield, Hartford and New Haven Counties City of Lichfield in the UK 185,186 920 sq mi
(2,383 km2)
State map highlighting Litchfield County
Middlesex County 007 Middletown 1785 From parts of Hartford and New London Counties Former county of Middlesex in the UK 164,245 369 sq mi
(956 km2)
State map highlighting Middlesex County
New Haven County 009 New Haven 1666 original county After New Haven Colony, founded as a haven in which Puritans could be free from persecution. 864,835 606 sq mi
(1,570 km2)
State map highlighting New Haven County
New London County 011 New London 1666 original county After London, UK 268,555 666 sq mi
(1,725 km2)
State map highlighting New London County
Tolland County 013 Rockville 1785 From parts of Hartford and Windham Counties Hamlet of Tolland, Somerset, UK 149,788 410 sq mi
(1,062 km2)
State map highlighting Tolland County
Windham County 015 Willimantic 1726 From parts of Hartford and New London Counties After Windham (now Wineham) in Sussex, England 116,418 513 sq mi
(1,329 km2)
State map highlighting Windham County

Former counties[edit]


  1. ^ All land in Connecticut is covered by an incorporated city or town. County borders match constituent city and town borders. See Local government in Connecticut
  2. ^ Officially, Connecticut has no county seats.[9] The listed communities are instead historical county seats.


  1. ^ a b Clark, George Larkin (1914). A History of Connecticut: Its People and Institutions. G. P. Putnam's Sons. p. 1. a history of Connecticut.
  2. ^ An Overview of County Government Archived July 8, 2008, at the Wayback Machine, National Association of Counties website, accessed January 5, 2008
  3. ^,a%20viable%20source%20of%20government. "Because the state and local governments had historically wielded substantial authority within Connecticut, county governments never achieved the authority needed to gain a stronghold as a viable source of government."
  4. ^ "State Marshals Directory - CT Judicial Branch".
  5. ^ "Connecticut Judicial District Map". Retrieved February 24, 2021.
  6. ^ "Change to County Equivalents in the State of Connecticut". Federal Register. December 14, 2020. Retrieved February 24, 2021.
  7. ^ "Proposed Change to County Equivalents in Connecticut" (PDF). US Census Bureau.
  8. ^ "EPA County FIPS Code Listing". Archived from the original on October 7, 2012. Retrieved February 23, 2008.
  9. ^ "Connecticut State Register and Manual, Section VI: Counties". Connecticut Official State Website (Office of Secretary of State).
  10. ^ a b c National Association of Counties. "NACo – Find a county". Archived from the original on September 27, 2007. Retrieved April 30, 2008.
  11. ^ Beatty, Michael (2001). County Name Origins of the United States. McFarland Press. ISBN 0-7864-1025-6.
  12. ^ "Connecticut QuickFacts". U.S. Census Bureau. Retrieved August 16, 2021.