state record · population
Population of Connecticut
Connecticut had an estimated population of 3,675,069 on July 1, 2024, according to the Census Bureau's Population Estimates Program.
What stands out
Connecticut had an estimated population of 3,675,069 on July 1, 2024, according to the Census Bureau's Population Estimates Program. Since July 2020 that is +2.7 % (95,151 people); since 2010 it is +2.7 %. Migration is the larger driver since 2020: net migration +91,230 against a natural change (births minus deaths) of +4,088. Among the 51 states in the United States, it ranks 29 by population. Values for 2010–2019 and 2020–2024 come from two estimate vintages benchmarked to different censuses; the 2019→2020 step is partly a rebasing.
Population and components of change
July 1 estimates; components per estimate year (July–June).
Largest counties in Connecticut
By latest estimate, with change since July 2020. Each links to the county's own population record.
| County | Population | Since 2020 |
|---|---|---|
| Capitol Planning Region | 991,508 | +2.8 % |
| Fairfield County | 943,332 | |
| Hartford County | 891,720 | |
| New Haven County | 854,757 | |
| Western Connecticut Planning Region | 637,013 | +3.0 % |
| South Central Connecticut Planning Region | 576,718 | +2.2 % |
| Naugatuck Valley Planning Region | 462,220 | +2.9 % |
| Greater Bridgeport Planning Region | 335,666 | +3.5 % |
| Southeastern Connecticut Planning Region | 282,602 | +1.5 % |
| New London County | 265,206 | |
| Litchfield County | 180,333 | |
| Lower Connecticut River Valley Planning Region | 177,540 | +2.5 % |
| Middlesex County | 162,436 | |
| Tolland County | 150,721 | |
| Windham County | 116,782 | |
| Northwest Hills Planning Region | 114,101 | +1.7 % |
| Northeastern Connecticut Planning Region | 97,701 | +2.6 % |
Largest cities and towns in Connecticut
Incorporated places, latest estimate. The Census Bureau publishes totals only for places, no components.
| Place | Population | Since 2020 |
|---|---|---|
| Bridgeport city | 151,599 | +2.6 % |
| Stamford city | 139,134 | +2.7 % |
| New Haven city | 137,562 | +6.4 % |
| Hartford city | 122,129 | +1.4 % |
| Waterbury city | 115,908 | +1.8 % |
| Norwalk city | 93,661 | +3.0 % |
| Danbury city | 88,692 | +3.0 % |
| New Britain city | 75,871 | +4.0 % |
| Bristol city | 62,195 | +2.4 % |
| Meriden city | 60,849 | +0.4 % |
| West Haven city | 55,379 | -0.3 % |
| Milford city (balance) | 51,004 | +1.2 % |
| Middletown city | 48,616 | +3.5 % |
| Shelton city | 42,805 | +5.0 % |
| Norwich city | 39,993 | -0.1 % |
| Torrington city | 35,673 | +0.9 % |
| Naugatuck borough | 32,116 | +2.0 % |
| New London city | 28,081 | +4.8 % |
| Ansonia city | 19,195 | +1.6 % |
| Derby city | 12,915 | +4.9 % |
| Groton city | 10,160 | +8.5 % |
| Danielson borough | 4,264 | +2.2 % |
| Jewett City borough | 3,464 | +2.1 % |
| Woodmont borough | 2,392 | +53.9 % |
| Newtown borough | 1,980 | +3.8 % |
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