Welcome to the Connecticut State Data Center’s Connecticut data distribution page. Included below are a variety of Connecticut datasets from MAGIC, the U.S. Census and other sources. All data are available as downloadable csv files which can be read by most spreadsheet and data programs, shapefiles in Connecticut NAD83 feet and WGS84 projections, KML (for Google Earth), and can be previewed in Google Maps. Methodology related to the data creation is included for U.S. Census datasets and we encourage users to examine the methodology, especially when using the American Community Survey as this will provide insights into how to interpret the margin of error values.

American Community Survey (ACS) 5-Year Estimates 2010-2014 2009-2013 (Coming Soon) 2008-2012 2007-2011 2006-2010 3-Year Estimates 2011-2013 (Coming Soon) 2010-2012 (Coming Soon) 2009-2011 2008-2010 1-Year Estimates 2014 (Coming Soon) 2013 2012 2011 2010

Decennial Census 2010 Decennial Census – Summary File 2 2010 Decennial Census – Summary File 1 2010 Decennial Census – Demographic Profile 2010 Decennial Census – PL 94-171 Redistricting Data

 

American Community Survey

2011 American Community Survey 1 year Estimates
2012 American Community Survey 1-Year Estimates

The 2012 American Community Survey (ACS) 1-Year data for Connecticut includes multiple tables pertaining to age, education, households, income, housing and more, for towns with a population of 65,000 or greater.  Within Connecticut, 8 towns are included in the 1-Year ACS estimates and includes Bridgeport, Danbury, Hartford, New Britain, New Haven, Norwalk, Stamford, and Waterbury.  Included below are the 2012 ACS 1-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

2011 American Community Survey 1 year Estimates
2011 American Community Survey 1-Year Estimates

The 2011 American Community Survey (ACS) 1-Year data for Connecticut includes multiple tables pertaining to age, education, households, income, housing and more, for towns with a population of 65,000 or greater.  Within Connecticut, 8 towns are included in the 1-Year ACS estimates and includes Bridgeport, Danbury, Hartford, New Britain, New Haven, Norwalk, Stamford, and Waterbury.  Included below are the 2011 ACS 1-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

2010 American Community Survey 1 year Estimates

2010 American Community Survey 1-Year Estimates

The 2010 American Community Survey (ACS) 1-Year data for Connecticut includes multiple tables pertaining to age, education, households, income, housing and more for towns with a population of 65,000 or greater.  Within Connecticut, 8 towns are included in the 1-Year ACS estimates and includes Bridgeport, Danbury, Hartford, New Britain, New Haven, Norwalk, Stamford, and Waterbury.  Included below are the 2010 ACS 1-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

 

2009-2011 American Community Survey 3 year Estimates

2009-2011 American Community Survey 3-Year Estimates

The 2011 American Community Survey (ACS) 3-Year data for Connecticut includes multiple tables pertaining to age, education, households, income, housing and more for towns with a population of 20,000 or greater.  Within Connecticut, 54 towns are included in the 3-Year ACS estimates and includes Berlin, Bloomfield, Branford, Bridgeport, Bristol, Cheshire, Danbury, Darien, East Hartford, East Haven, Enfield, Fairfield, Farmington, Glastonbury, Greenwich, Groton, Guilford, Hamden, Hartford, Manchester, Mansfield, Meriden, Middletown, Milford, Naugatuck, New Britain, New Canaan, New Haven, New London, New Milford, Newington, Newtown, North Haven, Norwalk, Norwich, Ridgefield, Shelton, Simsbury, South Windsor, Southington, Stamford, Stratford, Torrington, Trumbull, Vernon, Wallingford, Waterbury, Watertown, West Hartford, West Haven, Westport, Wethersfield, Windham, and Windsor.  Included below are the 2009-2011 ACS 3-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

2008-2010 American Community Survey 3 year Estimates

2008-2010 American Community Survey 3-Year Estimates

The 2010 American Community Survey (ACS) 3-Year data for Connecticut includes multiple tables pertaining to age, education, households, income, housing and more for towns with a population of 20,000 or greater.  Within Connecticut, 54 towns are included in the 3-Year ACS estimates and includes Berlin, Bloomfield, Branford, Bridgeport, Bristol, Cheshire, Danbury, Darien, East Hartford, East Haven, Enfield, Fairfield, Farmington, Glastonbury, Greenwich, Groton, Guilford, Hamden, Hartford, Manchester, Mansfield, Meriden, Middletown, Milford, Naugatuck, New Britain, New Canaan, New Haven, New London, New Milford, Newington, Newtown, North Haven, Norwalk, Norwich, Ridgefield, Shelton, Simsbury, South Windsor, Southington, Stamford, Stratford, Torrington, Trumbull, Vernon, Wallingford, Waterbury, Watertown, West Hartford, West Haven, Westport, Wethersfield, Windham, and Windsor.  Included below are the 2008-2010 ACS 3-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

2010-2014 American Community Survey 5-Year Estimates

The 2010-2014 American Community Survey (ACS) 5-Year data for Connecticut was released on December 3, 2015 and includes multiple tables pertaining to age, education, households, income, housing and more.  Included below are the 2010-2014 ACS 5-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

 

2008-2012 American Community Survey 5-Year Estimates

The 2008-2012 American Community Survey (ACS) 5-Year data for Connecticut was released on December 17, 2013 and includes multiple tables pertaining to age, education, households, income, housing and more.  Included below are the 2008-2012 ACS 5-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

 

2007-2011 American Community Survey 5-Year Estimates

The 2007-2011 American Community Survey (ACS) 5-Year data for Connecticut was released on December 6, 2012 and includes multiple tables pertaining to age, education, households, income, housing and more.  Included below are the 2007-2011 ACS 5-Year Estimates for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

 

2006-2010 American Community Survey 5 year Estimates

2006-2010 American Community Survey 5-Year Estimates

The 2006-2010 American Community Survey (ACS) 5-Year data for Connecticut was released on December 8, 2011 and includes multiple tables pertaining to age, education, households, income, housing and more.  Included below are the 2006-2010 ACS 5-Year data for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.  This data is also accessible via the American FactFinder.

Want to know how (or if) you can compare data from the American Commuity Survey with Decennial Census data? View the ACS Comparison Guide

 

Decennial Census – 2010

2010 Census Summary File 2 for Connecticut

2010 Census Summary File 2 for Connecticut

The latest 2010 Census data can be found using the American FactFinder or for advanced users, you can access this data directly via the U.S. Census FTP server.  The 2010 Census Summary File 2 data for Connecticut was released on January 13, 2012 and includes multiple tables pertaining to race and ethnicities.  Included below are the 2010 U.S. Census Summary File 2 data for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.

 

2010 Census Summary File 1 for Connecticut

2010 Census Summary File 1 for Connecticut

The latest 2010 Census data can be found using the American FactFinder or for advanced users, you can access this data directly via the U.S. Census FTP server.  The 2010 Census Summary File 1 data for Connecticut was released on June 30, 2011 and includes multiple tables pertaining to population, age, sex, race, ethnicity, relationship, household, and housing data.  Included below are the 2010 U.S. Census Summary File 1 data for Connecticut at multiple levels of geography in spreadsheet format (.csv) which includes a codebook for each dataset.  A geodatabase file is provided for ArcGIS users to easily join and map this data.

 

2010 Census Demographic Profile for Connecticut

2010 Census Demographic Profile for Connecticut

The latest 2010 Census data can be found using the American FactFinder or for advanced users, you can access this data directly via the U.S. Census FTP server.  The 2010 Census Demographic Profile data for Connecticut was released on May 11, 2011 and includes population, age, sex, race, ethnicity, relationship, household, and housing data.  From the links below, users can download the data for Connecticut by multiple geographies from the spreadsheet link in .csv format.  Each of these geographies include multiple attributes and a codebook is provided for each dataset to assist users with using this data.

 

2010 Census Redistricting Data and Shapefiles (Public Law 94-171)

2010 Census Redistricting Data and Shapefiles (Public Law 94-171)

The latest 2010 Census data can be found using the American FactFinder or for advanced users, you can access this data directly via the U.S. Census FTP server.  The 2010 Census Redistricting data (Public Law 94-171) data was released on March 9, 2011 and includes population, race, ethnicity, voting age (18+), and occupancy data.

* Two blocks were incorrectly reported in Groton, CT and the full details on this errata are available in the 2010 Redistricting (Public Law 94-171) Connecticut errata report.

 

 

Decennial Census – 2000

2000 Census Shapefiles

Visit the MAGIC Connecticut GIS Data page to download 2000 Census shapefiles. Note: The shapefiles on the MAGIC Connecticut GIS Data page are boundary files for the 2000 Census and do not include data. To obtain 2000 Census data visit the American FactFinder.

 

Decennial Census – 1990

1990 Census Shapefiles

Visit the MAGIC Connecticut GIS Data page to download 1990 Census shapefiles. Note: The shapefiles on the MAGIC Connecticut GIS Data page are boundary files for the 1990 Census and do not include data.

 

 

Credits

2010 Census Data Preparation Will Carnes (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 Census Data Preparation Curtis Denton (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 Census Data Processing Jeff Dunn (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Shapefile and KML Development Edward Fitzgerald (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Website Development and Data Development Michael Howser (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Python Scripting for Data Processing and Dataset Development for 2012 ACS Katharine Johnson  (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Python Scripting for Data Processing and Dataset Development for 2012 ACS Xiaojiang Li  (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Python Scripting for Data Processing and Dataset Development for 2010 Census, 2010 & 2011 ACS Jie Lin  (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 ACS KML Development Brian Perchal (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 Census and ACS Data Processing Jonathan Pollak (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 Census Data Processing Jonathan Portillio (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2011 ACS Processing and Python Scripting Scott Russell (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

2010 Census Shapefile Processing Josh Strunk (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)

Python Scripting for Data Processing and Dataset Development for 2012 ACS Weixing Zhang  (Connecticut State Data Center at the University of Connecticut Libraries MAGIC)