Population of Counties in Connecticut (2017)

Name 2017 Population Growth Rate
Fairfield County944,1772.66%
Hartford County892,389-0.33%
New Haven County856,875-0.76%
New London County269,801-1.56%
Litchfield County182,571-3.79%
Middlesex County163,329-1.39%
Tolland County151,118-1.37%
Windham County116,192-2.02%