Fairfield County: one of four original counties created in Connecticut in 1666. Historic county seats: Bridgeport and Danbury.
Hartford County: one of four original counties created in Connecticut in 1666. Historic county seat: Hartford.
Litchfield County: formed in 1751 from parts of Fairfield County, Hartford County, and New Haven County. Historic county seats: New Milford and Winsted.
Middlesex County: formed in 1785 from parts of Hartford County and New London County. Historic county seat: Middletown.
New Haven County: one of four original counties created in Connecticut in 1666. Historic county seats: New Haven and Waterbury.
New London County: one of four original counties created in Connecticut in 1666. Historic county seats: New London and Norwich.
Tolland County: formed in 1785 from parts of Hartford County, and Windham County. Historic county seat: Tolland.
Windham County: formed in 1726 from parts of Hartford County, and New London County. Historic county seats: Putnam and Willimantic.
Defunct County
Westmoreland County: formed in 1776 from land later decided to be part of Pennsylvania. Abolished in 1782.
Note
Since 1960 counties in Connecticut have no governmental function: all legal power is vested in state and town governments.
Source
Connecticut County Formation Map (http://www.negenealogy.com/ct/ct_maps/ct_cf.htm)
The county remains one of the oldest levels of government in China and significantly predates the establishment of provinces in the Ming dynasty.
The county of Oslo is equivalent to the municipality of Oslo.
At the county level there is a county administrative board led by a governor appointed by the central government of Sweden, as well as an elected county council that handles a separate set of issues, notably hospitals and public transportation.
Connecticut (pronounced /kəˈnɛtɪkət/) is a state of the United States, part of the New England region, as well as the southernmost state in New England and one of the wealthiest states in the country.
As of 2004, the population of Connecticut was 3,503,604.
As of the 2003, the population of Connecticut was 3,483,372.