Connecticut
- FIPS code
- 09
- Abbreviation
- CT
- Jurisdiction type
- state
Population
- Population (2025)
- 3,688,496
- Annual change
- 14,047 (+0.4%)
Source: U.S. Census Bureau — Population Estimates Program — National/State Population Totals, Vintage 2025
Population History
Population changed from 3,579,643 in 2020 to 3,688,496 in 2025.
| Year | Population | Change | Percent change | Source vintage |
|---|---|---|---|---|
| 2020 | 3,579,643 | — | — | Vintage 2025 |
| 2021 | 3,607,765 | +28,122 | +0.8% | Vintage 2025 |
| 2022 | 3,618,707 | +10,942 | +0.3% | Vintage 2025 |
| 2023 | 3,641,369 | +22,662 | +0.6% | Vintage 2025 |
| 2024 | 3,674,449 | +33,080 | +0.9% | Vintage 2025 |
| 2025 | 3,688,496 | +14,047 | +0.4% | Vintage 2025 |
Historical values may come from different release vintages: a later release can revise an earlier year's estimate, so consecutive rows are not guaranteed to share the same source vintage.