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The population count of Connecticut was 3,594,478 in 2017.

Population

Population Change

Above charts are based on data from the U.S. Census American Community Survey | ODN Dataset | API - Notes:

1. ODN datasets and APIs are subject to change and may differ in format from the original source data in order to provide a user-friendly experience on this site.

2. To build your own apps using this data, see the ODN Dataset and API links.

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Demographics and Population Datasets Involving Connecticut

  • API

    Populated Places in Connecticut

    data.ct.gov | Last Updated 2015-04-06T14:07:46.000Z

    A listing of named populated places within Connecticut. This listing represents a subset of place names in Connecticut from the U.S. Board on Geographic Names, and is limited to populated places.

  • API

    Connecticut Town Population Projections 2015-2025

    data.ct.gov | Last Updated 2015-12-17T17:43:23.000Z

    These projections are created based upon several datasets and while these estimates are developed based on multiple data sources, actual population changes may vary from these projections. To assist in planning, analysis, and decision making, the population projections have been developed based on state and locally derived fertility rates.

  • API

    Correctional Facility Daily Population Count By Facility

    data.ct.gov | Last Updated 2019-03-13T13:54:43.000Z

    CT Department of Correction Facility Population Count by Date, By Status, Filter by Facility

  • API

    State of CT: Open Expenditures - Ledger

    data.ct.gov | Last Updated 2017-09-27T07:56:17.000Z

    This data allows citizens to view who received payments from the state for goods or services and how much they received. The data can be explored by searching for specific payee names or by browsing by Government Function. The Open Checkbook app( http://opencheckbook.ct.gov) allows the user to drill down from aggregated spending accounts all the way down to each individual payment to a payee. The data is updated nightly and therefore reflects current spending activities more accurately than any other publicly available source. In general the data reflects all payments made up to 24 to 48 hours prior to view. Certain payee names have been removed in order to protect the privacy of individuals, in accordance with Health Insurance Portability and Accountability Act (HIPAA) regulations or where the information is otherwise protected by law. Redacted information includes: •Payees who are statutorily protected •Information that would lead to violating HIPAA laws •Information of Minors

  • API

    Connecticut Resident Deaths, 1999-2011, Selected Causes of Death by Age, Sex, Race and Hispanic Ethnicity

    data.ct.gov | Last Updated 2014-06-05T19:48:39.000Z

    Deaths counts for Connecticut Residents by cause of death. Counts are provided by 5-year age group, sex, and 4 mutually-exclusive race/ethnicity categories (White non-Hispanic, Black non-Hispanic, Other non-Hispanic, and Hispanic-any race).

  • API

    Department of Corrections Quarterly Average Facilty Population

    data.ct.gov | Last Updated 2019-01-17T20:43:44.000Z

    CT Department of Correction quarterly average inmate population in State of Connecticut correctional facilities.

  • API

    2010 Population By Town

    data.ct.gov | Last Updated 2015-02-04T15:33:36.000Z

    Population by town in Connecticut based on the 2010 census

  • API

    Percent of Connecticut adults (18+ y) reporting ever being told that they had diabetes, by race/ethnicity and year

    data.ct.gov | Last Updated 2014-06-05T19:48:21.000Z

    This table provides prevalence rates of diagnosed diabetes among all Connecticut adults (18+y) and by race and ethnicity. When possible, 3-year averages were used to improve the precision of the prevalence estimates (all estimates include at least 2 years of data).

  • API

    2015-2040 Population Projections - Town Level

    data.ct.gov | Last Updated 2017-08-31T04:00:33.000Z

    The 2015 to 2040 population projections for towns in the state of Connecticut were developed by the Connecticut State Data Center for planning, analysis, and to inform decision making. The projections are individual population projections for the resident population of each of Connecticut's 169 towns and were published on August 31, 2017. These projections supersede the 2012 edition of the population projections developed by the Connecticut State Data Center.

  • API

    Connecticut Resident Deaths, 1999-2013

    data.ct.gov | Last Updated 2016-02-29T19:43:00.000Z

    Connecticut resident deaths, 1999-2013, by Age, Sex, Race/Ethnicity for select Causes of Death; available at www.ct.gov/dph/RegistrationReport.