The area of Connecticut was part of the original territory of the United States. It was chartered as a colony in 1662. In 1786, it ceded area to the United States’ government that became part of the Northwest Territory in 1787. Connecticut ratified the U.S. Constitution on January 9, 1788; it was the fifth of the original 13 states to join the Union. Its boundary was generally the same as the present state (excluding the Connecticut Western Reserve), although the boundary between Connecticut and Massachusetts was changed slightly in 1804.

Census data for Connecticut are available beginning with the 1790 census.

From the Federal Register: A Notice by the Census Bureau on 06/06/2022:

“SUMMARY: This notice provides information about the State of Connecticut's (hereafter Connecticut or the State) formal request to the Census Bureau to adopt the State's nine planning regions as county-equivalent geographic units for purposes of collecting, tabulating, and disseminating statistical data, replacing the eight counties which ceased to function as governmental and administrative entities in 1960. The Census Bureau will implement this change internally in 2022, with public data and geospatial products reflecting the change beginning in late 2022. By 2024, all Census Bureau operations and publications, both internal and external, will use the nine new county-equivalent boundaries, names, and codes, except for 2020 Decennial Census data publications and other datasets referencing the eight legacy counties as published before June 1, 2022.”

Key Stats

From Census.gov / Data:

Data Tools and Apps - Find information using interactive applications (including the five highlighted below) to get statistics from multiple surveys.

Data Tool: My Community Explorer - This tool combines select demographic, business, and resilience data to help users identify potentially underserved areas of their state, county, and community. Step 1: Select Connecticut.

Data Tool: My Congressional District - Access selected statistics about your Congressional district collected through the American Community Survey (ACS) and County Business Patterns (CBP). Connecticut selected.

Data Tool: My Tribal Area - Access selected statistics collected for the American Indian and Alaska Native (AIAN) population from the American Community Survey (ACS). Connecticut and Golden Hill Paugussett (state) selected.

Data Tool: QuickFacts - QuickFacts provides frequently requested Census Bureau information at the national, state, county, and city level. Dashboard for Connecticut is shown below. Click the tab “TABLE 5” to compare the United States, Connecticut, Bridgeport, Stamford, New Haven, Hartford (state capital).

Note: The dashboard above is cropped at the bottom. Click on the image for the full dashboard.

Experimental Data Product: Business Trends and Outlook Survey (BTOS) - Insight into the state of the economy by providing timely data for key economic measures and business expectations about future conditions. For summary Connecticut data, select the "STATE" tab, mouse over and click on Connecticut on the map. For detailed state data, scroll down and select Connecticut on the FILTER ALL CHARTS BELOW BY STATE.

More Stats

From data.census.gov:

Related Information

Profile, Connecticut

Note: The profile above is cropped at the bottom. Click on the image for the full profile.

Source: Selected Monthly State Tax Collections.

Monthly Comparisons for Selected State Tax Collections, click on Connecticut in map

Source: 2021 American Community Survey (ACS) 1-year estimates.

Table DP05, ACS Demographic and Housing Estimates, United States & Connecticut

Source: U.S. Census Bureau, Population Division (Annual Estimates of the Resident Population).

Related Information

County Population by Characteristics: 2020-2021

Connecticut Counties: 2020-2021

City and Town Population Totals: 2020-2021

Connecticut Incorporated Places 2020-2021

Source: 2018 - 2021 Annual Survey of Manufactures (ASM).

Related Information

Table AM1831BASIC01, Annual Survey of Manufactures: Summary Statistics for Industry Groups and Industries in the U.S.: 2018 – 2021, showing manufacturing in Connecticut

Source: 2020 Annual Business Survey (ABS).

Table AB2000CSA01, Annual Business Survey: Statistics for Employer Firms by Industry, Sex, Ethnicity, Race, and Veteran Status for the U.S., States, and Metro Areas: 2020, showing Connecticut

Source: 2020 County Business Patterns (CBP).

Table CB2000CBP, All Sectors: County Business Patterns, including ZIP Code Business Patterns, by Legal Form of Organization and Employment Size Class for the U.S., States, and Selected Geographies: 2020, showing all 2-digit NAICS Codes for Connecticut

Source: 2019 Nonemployer Statistics (NES).

Table NS1900NONEMP, All Sectors: Nonemployer Statistics by Legal Form of Organization and Receipts Size Class for the U.S., States, and Selected Geographies: 2019, showing all 2-digit NAICS Codes for Connecticut

Source: Business Formation Statistics (BFS).

Interactive visualization: Annual Business Applications by State and County (Scroll down, then hover and click on Connecticut.)

Interactive visualizations: Business Formation Statistics (BFS), U.S. Total and By State (Select Connecticut on Monthly Business Applications by State – shown below - and on Monthly Business Formations by State.)

Interactive visualizations: Business Formation Statistics (BFS) screenshot

Note: Click on the image above to go to the Business Formation Statistics data page. For the Connecticut graphic, scroll down to “Interactive Graphs.” Click on the icon for “Monthly Business Applications by State (BA)” and select “Connecticut” in the upper-right drop-down area.

From Census Business Builder: Regional Analyst Edition (Release 4.3):

Region: Connecticut

Local Business Profile, All Sectors - Connecticut

From Foreign Trade > International Trade Data:

State and Metropolitan Area Trade Data

USA Trade Online, the Official Source of Trade Statistics

Note: After you create an account, you can choose between State Export Data (Origin of Movement) or State Import Data (State of Destination) by Harmonized System (HS) or NAICS. More information is available in the Quick Start Guide.

Source: Monthly State Retail Sales.

Interactive visualization: Monthly State Retail Sales (Hover and click on Connecticut.)

From the State Data Center (SDC) Program:

Connecticut

From the Library / America Counts: Stories Behind the Numbers:

STATE PROFILES: 2020 Census (State-by-State Visualizations of Key Demographic Trends From the 2020 Census)

STATE PROFILES: Connecticut: 2020 Census

From the Statistics in Schools (SIS) program:

State Facts for Students, select Connecticut

Note: The Connecticut page is cropped at the bottom. Click on the image above to go to the “State Facts for Students” main page. Then, use the drop down to select “Connecticut” or click “CT” on the map for the full page for Connecticut.

Source: 2017 Economic Census.