State bird
American robin
Sources: Designation & background
Local timeHartford ·
U.S. States / Northeast · Card 007
Connecticut
The Constitution State
The New England Trail crosses Connecticut and Massachusetts from Long Island Sound toward inland ridges.
Connecticut and its surroundings
● State capital · Gold highlights Connecticut.
Map: Natural Earth. Neighboring states use postal abbreviations.
Map: Natural Earth. Neighboring states use postal abbreviations.
At a glance
- Capital
- Hartford
- Postal abbreviation
- CT
- Population
- 3,688,496July 1, 2025 · Census estimate
- Total area
- 14,357 km²5,543 square miles · land and water
- Constitution ratified
- January 9, 1788One of the original thirteen states
- Region
- Northeast
Sources: Census · population · Census · area
State symbols & traditions
State songs
Yankee Doodle; Beautiful Connecticut Waltz
Sources: Designation & background
Geography & flag
01
Location
Neighboring states: Massachusetts, New York, Rhode Island.
02
Landscape & places
The New England Trail crosses Connecticut and Massachusetts from Long Island Sound toward inland ridges. Traprock ridges, farms, forests and river valleys show how varied the landscape is between the coast and the uplands.
03
Land and water
The total area includes 12,542 km² of land and 1,816 km² of water, according to Census area measurements.
State flag
A white shield with three grapevines on a blue field, above a ribbon bearing the state motto.
Sources: Census · geographic reference · Census · area measurements · National Park Service · New England
How the landscape works
The New England Trail provides a way to read a landscape as a connected route rather than a collection of isolated viewpoints. Coastal country, ridges, river valleys, woods, and farms occur along the route. A ridge is an elongated area of high ground; a valley is lower ground between higher areas. Crossing them changes the terrain even when a traveler remains within one state.
History
Connecticut’s role in the Great Compromise
At the Constitutional Convention in 1787, large and small states disagreed over representation in Congress. Large states wanted representation based on population. Small states feared that arrangement would leave them with little influence and argued for equal representation.
Connecticut delegates Roger Sherman and Oliver Ellsworth helped develop the compromise: representation by population in the House of Representatives and equal representation for states in the Senate. The agreement allowed the convention to move forward. Connecticut’s connection to the Constitution therefore involves the structure of Congress as well as its own ratification in 1788.
Read more: Historical source ↗
Why this mattered
Large and small states disagreed over representation because population-based voting would favor the large states, while equal voting would give small states greater relative influence. The compromise created two different systems within one Congress: representation by population in the House and equal state representation in the Senate. Neither side’s preferred rule became the rule for both chambers.
Key dates
-
Colonial charter granted
-
U.S. Constitution ratified
-
Constitution ratified · One of the original thirteen states
Sources: Congressional Research Service · statehood · U.S. Census Bureau · historical geography · National Park Service
People and place
Indigenous history and communities today
The Mohegan Tribe’s government and cultural work are part of present-day Connecticut. A constitutional history focused on colonial representatives should not imply that the region’s Indigenous communities belong only to the past.
Continue with Mohegan Tribe. This is one starting point, not a complete account of the peoples connected to this land.
Compare
Connecticut and Massachusetts
| Measure | Connecticut | Massachusetts |
|---|---|---|
| Population (2025) | 3,688,496 | 7,154,084 |
| Land area (km²) | 12,542 | 20,202 |
| People per km² of land | 294.1 | 354.1 |
Massachusetts has more people per square kilometer of land. Population density divides population by land area. It is an average across the whole jurisdiction, not a claim that residents are evenly spread out.
Calculated from the Census population series and land-area measurements used on these pages. Rounded figures; water area is excluded. Explore Massachusetts.
Economy
Main activities
In 2025, finance and insurance was the largest of the broad industry groups compared here by current-dollar output. Other major groups included real estate and rental and leasing, professional and business services, and manufacturing.
Total economic output was $376.5 billion in current dollars in 2025.
Largest industry groups · 2025
- Finance and insurance: 13.2%
- Real estate and rental and leasing: 13.1%
- Professional and business services: 12.7%
- Manufacturing: 11.2%
Share of total current-dollar GDP. These figures measure output, not employment.
Sources: BEA · annual GDP by state, SAGDP2
Production, jobs and wages answer different questions
The industry chart measures the value of production. It does not count workers. An industry with a large share of GDP need not employ the most people or pay the highest wages. Employment and wage data would be needed to answer those questions.
Population & economic trends
Population, 2020–2025
Millions of people3.692025 · millions of people
July 1 resident population estimates, using the Census Bureau’s Vintage 2025 series.
Sources: U.S. Census Bureau
View data table
| Year | People |
|---|---|
| 2020 | 3,579,643 |
| 2021 | 3,607,765 |
| 2022 | 3,618,707 |
| 2023 | 3,641,369 |
| 2024 | 3,674,449 |
| 2025 | 3,688,496 |
Real GDP, 2010–2025
Billions of chained 2017 dollars293.002025 · billions of chained 2017 dollars
Real GDP measures economic output adjusted for inflation. The chart uses BEA’s chained 2017 dollars.
Sources: U.S. Bureau of Economic Analysis
View data table
| Year | Millions of chained 2017 dollars |
|---|---|
| 2010 | 266,773.4 |
| 2011 | 261,555.8 |
| 2012 | 263,649.9 |
| 2013 | 258,911.0 |
| 2014 | 260,605.8 |
| 2015 | 268,869.8 |
| 2016 | 268,196.2 |
| 2017 | 273,875.1 |
| 2018 | 274,582.8 |
| 2019 | 275,225.4 |
| 2020 | 261,737.1 |
| 2021 | 270,779.8 |
| 2022 | 279,348.5 |
| 2023 | 283,228.5 |
| 2024 | 286,160.1 |
| 2025 | 293,002.8 |
Read the trend, then ask what explains it
Connecticut’s population increased by about 3.0% between 2020 and 2025 in this series. That shows the size of the change. The chart alone cannot tell us how much came from births, deaths or migration.
Real GDP adjusts for changes in prices, so it helps compare production over time. Current-dollar GDP includes price changes. Neither measure tells us how income is distributed among residents.
Representation
- Electoral votes
- 72024 & 2028 elections
- Voting U.S. House seats
- 52020 Census allocation
- U.S. Senate seats
- 2
Electoral votes equal the state’s U.S. House seats plus its two U.S. Senate seats. These allocations apply to the 2024 and 2028 presidential elections.
Practice
Test your knowledge
Use the explanations and data on this page to answer ten questions. Hints and links to the relevant sections are available throughout.
10 questions about Connecticut
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Sources & notes
Narrative and quiz updated 5 October 2026. Statistical data prepared 27 September 2026. Population: Census Bureau Vintage 2025, July 1 estimates for 2020–2025. Real GDP: BEA annual state accounts, SAGDP9, millions of chained 2017 dollars; industry shares: SAGDP2, current dollars. Data downloaded 27 September 2026. Area measurements include land and water.
Sources: Census · population estimates · BEA · state GDP · Census · area measurements · Natural Earth · map data
The capital clock shows current local time. Statistical figures are dated estimates and may be revised.
Updated 29 October 2026. Statistics retain the dated series shown in the charts; these are not live figures. Sources are linked beside each topic.