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POPULATION OF CONNECTICUT BY COUNTIES

County 2010 2015 est. 
Fairfield 916,829 948,053
Hartford 894,014 895,841
Litchfield 189,927 183,603
Middlesex 165,676 164,063
New Haven 862,477 859,470
New London 274,055 271,863
Tolland 152,691 151,420
Windham 118,428 116,573
Total for the State 3,574,097 3,590,886

                                                  

SQUARE MILES OF CONNECTICUT BY COUNTIES

County Square Miles
Fairfield
837.0
Hartford
750.6
Litchfield
944.6
Middlesex
439.1
New Haven
862.1
New London
771.7
Tolland
417.0
Windham
521.5
Total for the State
5,543.6