New Haven County is a county in the south central part of the U.S. state of Connecticut. As of the 2020 census, the population was 864,835, making it the third-most populous county in Connecticut. Two of the state's five largest cities, New Haven and Waterbury, are part of New Haven County.
Country: United States
State: Connecticut
Founded: 1666
Named after: New Haven Colony
Seat: none (since 1960) · New Haven (before 1960)
Largest municipality: New Haven (population) · Guilford (area)
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