New Haven County Cities/Towns - Ansonia, Beacon Falls, Bethany, Branford, Cheshire, Derby, East Haven, Guilford, Hamden, Madison, Meriden, Middlebury, Milford, Naugatuck, New Haven, North Branford, North Haven, Orange, Oxford, Prospect, Seymour, Southbury, Wallingford, Waterbury, West Haven, Wolcott, Woodbridge
- Your Ad HereNew Haven County is located in the south central part of the U.S. state of Connecticut. In 2000, the population was 824,008.History New Haven County was consitututed by an act of the Connecticut General Court on May 10, 1666.