Source: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer. Rankings among the 50 states.
Historical data
Pick an indicator to see its long-run evolution.
Population
1790–2024U.S. Census (decennial), 1790–2020 + estimates.
Population pyramid
Connecticut's civilian population by sex and five-year age group. Choose a year to see how the age structure has changed.
Tap an age group in the pyramid to see its detail.
Under 15
588,946 (16.0%)
15 to 64
2,366,950 (64.5%)
65 and older
714,203 (19.5%)
Source: U.S. Census Bureau, SC-EST2020 and SC-EST2024 age and sex estimates (civilian population, July 1).
Age, sex and longevity
The main indicators describing Connecticut's age structure, sex distribution and life expectancy.
| Median age | 40.9 years | |
| Female | 51.1% | |
| Male | 48.9% | |
| Under 18 | 20.2% | |
| 65 and older | 18.3% | |
| Life expectancy | 79.6 years |
Population, households and density
How many people and households live in Connecticut, how concentrated they are and how the population is changing.
| Total population | 3.68 M | 29th in the U.S. |
| Density | 286 /km² | 4th in the U.S. |
| Households | 1.41 M | |
| Urban population | 88.0% | |
| Largest metro | Bridgeport–Stamford–Norwalk (≈ 970,000) | |
| Growth | +0.3%/yr | 2020–2024 |
Race, ethnicity and origin
Connecticut is majority non-Hispanic white overall, but its major cities—Hartford, Bridgeport, New Haven and Waterbury—are majority Hispanic and Black, with large Puerto Rican communities.
| White (non-Hispanic) | 63.5% | |
| Hispanic or Latino | 18.0% | ≈ 660,000 |
| Black or African American | 10.6% | |
| Asian | 4.8% | |
| Two or more races | 3.0% | |
| Native American | 0.2% | |
| Puerto Rican origin | ≈ 9% | Largest Hispanic subgroup |
| Indian origin | ≈ 1.5% | Largest Asian subgroup |