Connecticut Demographics
Connecticut is the 29th most populous of 52 states in the United States, with 3,605,944 residents across 4,842 square miles. That is about 745 people per square mile. 0% of residents live in urban areas.
At the 2020 census
| Population | 3,605,944 |
|---|---|
| Land area | 4,842 sq mi |
| Density | 745 / sq mi |
| Urban share | 0% |
Data: 2020 Census · American Community Survey 2024
How Connecticut compares to the US
We're computing this state's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Connecticut
Measured from the state's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Connecticut — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Counties in Connecticut
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Capitol Planning Region | 975,705 | 1,015.5 | 961 |
| Western Connecticut Planning Region | 619,026 | 524.0 | 1,181 |
| South Central Connecticut Planning Region | 568,688 | 354.8 | 1,603 |
| Naugatuck Valley Planning Region | 450,251 | 403.9 | 1,115 |
| Greater Bridgeport Planning Region | 324,673 | 135.7 | 2,392 |
| Southeastern Connecticut Planning Region | 280,130 | 582.7 | 481 |
| Lower Connecticut River Valley Planning Region | 173,868 | 407.7 | 426 |
| Northwest Hills Planning Region | 112,438 | 753.8 | 149 |
| Northeastern Connecticut Planning Region | 95,243 | 536.1 | 178 |
Largest cities in Connecticut
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Bridgeport, CT | 148,630 | 16.1 | 9,252 |
| Stamford, CT | 135,455 | 37.6 | 3,601 |
| New Haven, CT | 134,023 | 18.7 | 7,171 |
| Hartford, CT | 121,054 | 17.4 | 6,965 |
| Waterbury, CT | 114,403 | 28.6 | 4,006 |
| Norwalk, CT | 91,175 | 22.9 | 3,984 |
| Danbury, CT | 86,518 | 42.0 | 2,059 |
| New Britain, CT | 74,135 | 13.4 | 5,534 |
| West Hartford, CT | 64,083 | 21.8 | 2,934 |
| Meriden, CT | 60,850 | 23.7 | 2,564 |
| Bristol, CT | 60,833 | 26.4 | 2,304 |
| West Haven, CT | 55,584 | 10.8 | 5,171 |
Showing the 12 most populous of 215 — the rest are shown on the map.
Related places
Nearest states
About this page
This page shows demographics for a US state from the 2020 census and the American Community Survey: population, land area, density, and how the state compares to national averages for income, housing, age, and more.
Use the links below to drill into the state's counties and largest cities, or open any point of the state in the radius tool to measure the population within a distance or drive time.