|Counties of Connecticut|
|Location||State of Connecticut|
|Populations||116,418 (Windham) – 957,419 (Fairfield)|
|Areas||369 square miles (960 km2) (Middlesex) – 920 square miles (2,400 km2) (Litchfield)|
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; Fairfield County was named after the salt marshes that bordered the coast, while New Haven County was named for the New Haven Colony.
Although Connecticut is divided into counties, there are no county-level governments, and local government in Connecticut exists solely on the municipality level. Almost all functions of county government were abolished in Connecticut in 1960, 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.
These counties are used in legacy geography, such as identifying land, national statistics and firmly within personnel rostering and court jurisdictions in the state's judicial and state marshal system. However, the three most populous—Fairfield, Hartford and New Haven—are as to many types of jurisdiction subdivided.
In 2019 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.
|Fairfield County||001||Bridgeport||1666||original county||From the hundreds of acres of salt marsh that bordered the coast.||959,768||626 sq mi
|Hartford County||003||Hartford||1666||original county||After Hertford, England (still said Hartford)||896,854||736 sq mi
|Litchfield County||005||N/A||1751||From parts of Fairfield, Hartford and New Haven Counties||City of Lichfield, Staffordshire, England||185,000||920 sq mi
|Middlesex County||007||Middletown||1785||From parts of Hartford and New London Counties||Former county of Middlesex, England||164,759||369 sq mi
|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.||863,700||606 sq mi
|New London County||011||New London||1666||original county||After London, England||268,805||666 sq mi
|Tolland County||013||Rockville||1785||From parts of Hartford and Windham Counties||Hamlet of Tolland, Somerset, England||150,293||410 sq mi
|Windham County||015||Willimantic||1726||From parts of Hartford and New London Counties||Either after Windham (now Wineham) in Sussex or Windham (now Wymondham, still said Windham) in Norfolk, England||116,418||513 sq mi
Both were extra-territorial:
a history of Connecticut.