The population density of Middlesex County, CT was 448 in 2011. The population density of Tolland County, CT was 370 in 2011.

Population Density

Population Density is computed by dividing the total population by Land Area Per Square Mile.

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.

3. If you use this derived data in an app, we ask that you provide a link somewhere in your applications to the Open Data Network with a citation that states: "Data for this application was provided by the Open Data Network" where "Open Data Network" links to http://opendatanetwork.com. Where an application has a region specific module, we ask that you add an additional line that states: "Data about REGIONX was provided by the Open Data Network." where REGIONX is an HREF with a name for a geographical region like "Seattle, WA" and the link points to this page URL, e.g. http://opendatanetwork.com/region/1600000US5363000/Seattle_WA

Geographic and Population Datasets Involving Middlesex County, CT or Tolland County, CT

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    Department of Correction Quarterly Average Facility Population

    data.ct.gov | Last Updated 2024-07-10T19:56:14.000Z

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

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    COVID-19 Tests, Cases, and Deaths (By Town) - ARCHIVE

    data.ct.gov | Last Updated 2023-08-02T15:39:17.000Z

    DPH is updating and streamlining the COVID-19 cases, deaths, and testing data. As of 6/27/2022, the data will be published in four tables instead of twelve. The COVID-19 Cases, Deaths, and Tests by Day dataset contains cases and test data by date of sample submission. The death data are by date of death. This dataset is updated daily and contains information back to the beginning of the pandemic. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-Cases-Deaths-and-Tests-by-Day/g9vi-2ahj. The COVID-19 State Metrics dataset contains over 93 columns of data. This dataset is updated daily and currently contains information starting June 21, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-State-Level-Data/qmgw-5kp6 . The COVID-19 County Metrics dataset contains 25 columns of data. This dataset is updated daily and currently contains information starting June 16, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-County-Level-Data/ujiq-dy22 . The COVID-19 Town Metrics dataset contains 16 columns of data. This dataset is updated daily and currently contains information starting June 16, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-Town-Level-Data/icxw-cada . To protect confidentiality, if a town has fewer than 5 cases or positive NAAT tests over the past 7 days, those data will be suppressed. COVID-19 cases, tests, and associated deaths from COVID-19 that have been reported among Connecticut residents. All data in this report are preliminary; data for previous dates will be updated as new reports are received and data errors are corrected. Deaths reported to the either the Office of the Chief Medical Examiner (OCME) or Department of Public Health (DPH) are included in the daily COVID-19 update. The case rate per 100,000 includes probable and confirmed cases. Probable and confirmed are defined using the CSTE case definition, which is available online: https://cdn.ymaws.com/www.cste.org/resource/resmgr/2020ps/Interim-20-ID-01_COVID-19.pdf The population data used to calculate rates is based on the CT DPH population statistics for 2019, which is available online here: https://portal.ct.gov/DPH/Health-Information-Systems--Reporting/Population/Population-Statistics. Prior to 5/10/2021, the population estimates from 2018 were used. Data on Connecticut deaths were obtained from the Connecticut Deaths Registry maintained by the DPH Office of Vital Records. Cause of death was determined by a death certifier (e.g., physician, APRN, medical examiner) using their best clinical judgment. Additionally, all COVID-19 deaths, including suspected or related, are required to be reported to OCME. On April 4, 2020, CT DPH and OCME released a joint memo to providers and facilities within Connecticut providing guidelines for certifying deaths due to COVID-19 that were consistent with the CDC’s guidelines and a reminder of the required reporting to OCME.25,26 As of July 1, 2021, OCME had reviewed every case reported and performed additional investigation on about one-third of reported deaths to better ascertain if COVID-19 did or did not cause or contribute to the death. Some of these investigations resulted in the OCME performing postmortem swabs for PCR testing on individuals whose deaths were suspected to be due to COVID-19, but antemortem diagnosis was unable to be made.31 The OCME issued or re-issued about 10% of COVID-19 death certificates and, when appropriate, removed COVID-19 from the death certificate. For standardization and tabulation of mortality statistics, written cause of death statements made by the certifiers on death certificates are sent to the National Center for Health Statistics (NCHS) at the CDC which assigns cause of death codes according to the International Causes of Disease 10th Revision (ICD-10) classification system.25,26 CO

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    Monthly Sale Price of Single Family Homes in CT

    data.ct.gov | Last Updated 2023-08-02T18:09:16.000Z

    Monthly sale price of single-family homes in Connecticut, 2001 through the present. Data updated monthly by the Connecticut Housing Finance Authority and tracked in the following dashboard: https://www.chfa.org/about-us/ct-monthly-housing-market-dashboard/. CHFA has stopped maintaining the dashboard and associated datasets, and this dataset will no longer be updated as of 2022.

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    CT School Learning Model Indicators by County (14-day metrics) - ARCHIVE

    data.ct.gov | Last Updated 2023-08-07T19:50:49.000Z

    NOTE: This dataset pertains only to the 2020-2021 school year and is no longer being updated. For additional data on COVID-19, visit data.ct.gov/coronavirus. This dataset includes the leading and secondary metrics identified by the Connecticut Department of Health (DPH) and the Department of Education (CSDE) to support local district decision-making on the level of in-person, hybrid (blended), and remote learning model for Pre K-12 education. Data represent daily averages for two-week periods by date of specimen collection (cases and positivity), date of hospital admission, or date of ED visit. Hospitalization data come from the Connecticut Hospital Association and are based on hospital location, not county of patient residence. COVID-19-like illness includes fever and cough or shortness of breath or difficulty breathing or the presence of coronavirus diagnosis code and excludes patients with influenza-like illness. All data are preliminary. These data are updated weekly and reflect the previous two full Sunday-Saturday (MMWR) weeks (https://wwwn.cdc.gov/nndss/document/MMWR_week_overview.pdf). These metrics were adapted from recommendations by the Harvard Global Institute and supplemented by existing DPH measures. For national data on COVID-19, see COVID View, the national weekly surveillance summary of U.S. COVID-19 activity, at https://www.cdc.gov/coronavirus/2019-ncov/covid-data/covidview/index.html DPH note about change from 7-day to 14-day metrics: Prior to 10/15/2020, these metrics were calculated using a 7-day average rather than a 14-day average. The 7-day metrics are no longer being updated as of 10/15/2020 but the archived dataset can be accessed here: https://data.ct.gov/Health-and-Human-Services/CT-School-Learning-Model-Indicators-by-County/rpph-4ysy As you know, we are learning more about COVID-19 all the time, including the best ways to measure COVID-19 activity in our communities. CT DPH has decided to shift to 14-day rates because these are more stable, particularly at the town level, as compared to 7-day rates. In addition, since the school indicators were initially published by DPH last summer, CDC has recommended 14-day rates and other states (e.g., Massachusetts) have started to implement 14-day metrics for monitoring COVID transmission as well. With respect to geography, we also have learned that many people are looking at the town-level data to inform decision making, despite emphasis on the county-level metrics in the published addenda. This is understandable as there has been variation within counties in COVID-19 activity (for example, rates that are higher in one town than in most other towns in the county).

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    COVID-19 Vaccinations by County - ARCHIVED

    data.ct.gov | Last Updated 2023-08-02T15:27:03.000Z

    NOTE: As of 2/16/2023, This page is not being updated, for data on COVID-19 Updated (Bivalent) Booster Coverage go to https://data.ct.gov/Health-and-Human-Services/COVID-19-Updated-Bivalent-Booster-Coverage-By-Town/bqd5-4jgh. Important change as of June 1, 2022 As of June 1, 2022, we will be using 2020 DPH provisional census estimates* to calculate vaccine coverage percentages at the county level. 2020 estimates will replace the 2019 estimates that have been used. Caution should be taken when making comparisons of percentages calculated using the 2019 and 2020 census estimates since observed difference may result from the shift in the denominator. * DPH Provisional State and County Characteristics Estimates April 1, 2020. Hayes L, Abdellatif E, Jiang Y, Backus K (2022) Connecticut DPH Provisional April 1, 2020, State Population Estimates by 18 age groups, sex, and 6 combined race and ethnicity groups. Connecticut Department of Public Health, Health Statistics & Surveillance, SAR, Hartford, CT. ___________________________________________________________________________________________ This tables shows the number and percent of people that have initiated COVID-19 vaccination, are fully vaccinated and had additional dose 1 by county of residence. All data in this report are preliminary; data for previous dates will be updated as new reports are received and data errors are corrected. Population size estimates are based on 2019 DPH census estimates until 5/26/2022. From 6/1/2022, 2020 DPH provisional census estimates are used. A person who has received at least one dose of any COVID-19 vaccine is considered to have initiated vaccination. A person is considered fully vaccinated if they have completed a primary series by receiving 2 doses of the Pfizer, Novavax or Moderna vaccines or 1 dose of the Johnson & Johnson vaccine. The fully vaccinated are a subset of the number who have initiated vaccination. Percentages are calculated using 2019 census data (https://portal.ct.gov/DPH/Health-Information-Systems--Reporting/Population/Annual-Town-and-County-Population-for-Connecticut). A person who completed a Pfizer, Moderna, Novavax or Johnson & Johnson primary series (as defined above) and then had an additional monovalent dose of COVID-19 vaccine is considered to have had additional dose 1. The additional dose may be Pfizer, Moderna, Novavax or Johnson & Johnson and may be a different type from the primary series. For people who had a primary Pfizer or Moderna series, additional dose 1 was counted starting August 18th, 2021. For people with a Johnson & Johnson primary series additional dose 1 was counted starting October 22nd, 2021. For most people, additional dose 1 is a booster. However, additional dose 1 may represent a supplement to the primary series for a people who is moderately or severely immunosuppressed. Bivalent booster administrations are not included in the additional dose 1 calculations. The percent with at least one dose may be over-estimated and the percent fully and additional dose 1 vaccinated may be under-estimated because of vaccine administration records for individuals that cannot be linked because of differences in how names or date of birth are reported. County of residence is determined based on the town of residence. Town of residence is verified by geocoding the reported address and then mapping it to a town using municipal boundaries. If an address cannot be geocoded, the reported town is used, if available. Out-of-state residents vaccinated by CT providers excluded from this table. People for whom an address is not currently available are shown in this table as “Address pending validation”. Connecticut COVID-19 Vaccine Program providers are required to report information on all COVID-19 vaccine doses administered to CT WiZ, the Connecticut Immunization Information System. Data on doses administered to CT residents out-of-state are being added to CT WiZ jurisdiction-by-jurisdiction.

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    Monthly Single-Family Home Sales in CT

    data.ct.gov | Last Updated 2023-08-02T18:10:37.000Z

    Monthly single-family home sales in Connecticut, 2001 through the present. Data updated monthly by the Connecticut Housing Finance Authority and tracked in the following dashboard: https://www.chfa.org/about-us/ct-monthly-housing-market-dashboard/. CHFA has stopped maintaining the dashboard and associated datasets, and this dataset will no longer be updated as of 2022.

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    Monthly Foreclosures in CT

    data.ct.gov | Last Updated 2023-08-02T18:09:29.000Z

    Monthly foreclosures in Connecticut by county, 2008 through the present. Data updated monthly by the Connecticut Housing Finance Authority and tracked in the following dashboard: https://www.chfa.org/about-us/ct-monthly-housing-market-dashboard/. CHFA has stopped maintaining the dashboard and associated datasets, and this dataset will no longer be updated as of 2022.

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    Connecticut Divorce Index, 1655-1953

    internal-ct.data.socrata.com | Last Updated 2024-08-12T18:00:58.000Z

    Divorce records are often a valuable source of information for researchers, as they can provide sometimes difficult to find information like a couple's date of marriage, the names of children, and a woman's maiden name. They also allow a fascinating insight into the values and mores surrounding marriage at the time. Connecticut began granting divorces in the mid-17th century, although only very, very sparingly at first. In the beginning only the General Assembly could grant a divorce; as the court system developed this eventually became mainly the purview of the superior courts, although the General Assembly continued to grant divorces until the early 20th century. This index is a combination of several different indexes created by Connecticut State Library staff over a period of many years. It contains divorce records for the following counties and dates: Fairfield: 1712-1941 Hartford: 1712-1953 Litchfield: 1751-1798, 1899-1927* Middlesex: 1786-1904 New Haven: 1712-1944 New London: 1712-1798* Tolland: 1786-1937 Windham: 1712-1798, 1907-1921* It also contains divorces granted by the General Assembly for 1655-1915. Divorce records for Litchfield, New London, and Windham Counties that fall in years not included in this list can be found in two books compiled by Barbara B. Ferris and Grace Louise Knox in the 1980s, located in the History & Genealogy reading room: <ul><li>Connecticut divorces: Superior court records for the counties of New London, Tolland & Windham, 1719-1910</li> <li>Connecticut divorces: Superior Court records for the counties of Litchfield, 1752-1922 and Hartford, 1740-1849</li></ul> Each entry in this list has a location of either a record or a file. Records are a brief summary of the case and the court's verdict that can be found in court record books. Files may have more information, such as the original divorce petition, statements from the litigants and witnesses, costs, and other material. To request a digital of physical copy of a record or file, please contact the staff of the <a href="https://libguides.ctstatelibrary.org/hg/home" target="blank_">History & Genealogy Unit</a> by telephone (860) 757-6580 or <a href="https://portal.ct.gov/csl/Email-Us?language=en_US" target="blank_">email</a>. There may be a small fee, depending on the size of the order and whether you would like a digital or physical copy. When requesting a copy of a record or file, please include the information from the relevant entry in the index. You are also more than welcome to visit the Connecticut State Library to see these materials for yourself! Note: Several volumes have extra, non-numbered pages at the end; these are denoted by a typographical mark and the word “misc.” *The February, 1769 term of the Superior Court in Fairfield is filed in a folder in the state archives RG 003, Superior Court Fairfield County Records/Dockets, Box 51. **Volume 19 contains miscellaneous papers at the end of the numbered pages. These papers are mostly in chronological order, and include court files, invoices, and the records of a few Superior Court terms. †Volume 21 contains miscellaneous papers at the end of the numbered pages. These papers are mostly in chronological order, and include court files and records for certain Superior Court terms. ††Volume 22 contains miscellaneous papers at the end of the numbered pages. These papers are mostly in chronological order, and include court files and records for certain Superior Court terms. ‡ Volume 28 contains miscellaneous papers at the end of the numbered pages. Some of these are a continuation of the August, 1793 session of the court at Litchfield.

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    COVID-19 Cases, Hospitalizations, and Deaths (By County) - ARCHIVE

    data.ct.gov | Last Updated 2023-08-02T15:01:42.000Z

    Note: DPH is updating and streamlining the COVID-19 cases, deaths, and testing data. As of 6/27/2022, the data will be published in four tables instead of twelve. The COVID-19 Cases, Deaths, and Tests by Day dataset contains cases and test data by date of sample submission. The death data are by date of death. This dataset is updated daily and contains information back to the beginning of the pandemic. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-Cases-Deaths-and-Tests-by-Day/g9vi-2ahj. The COVID-19 State Metrics dataset contains over 93 columns of data. This dataset is updated daily and currently contains information starting June 21, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-State-Level-Data/qmgw-5kp6 . The COVID-19 County Metrics dataset contains 25 columns of data. This dataset is updated daily and currently contains information starting June 16, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-County-Level-Data/ujiq-dy22 . The COVID-19 Town Metrics dataset contains 16 columns of data. This dataset is updated daily and currently contains information starting June 16, 2022 to the present. The data can be found at https://data.ct.gov/Health-and-Human-Services/COVID-19-Town-Level-Data/icxw-cada . To protect confidentiality, if a town has fewer than 5 cases or positive NAAT tests over the past 7 days, those data will be suppressed. COVID-19 cases, hospitalizations, and associated deaths that have been reported among Connecticut residents. All data in this report are preliminary; data for previous dates will be updated as new reports are received and data errors are corrected. Hospitalization data were collected by the Connecticut Hospital Association and reflect the number of patients currently hospitalized with laboratory-confirmed COVID-19. Deaths reported to the either the Office of the Chief Medical Examiner (OCME) or Department of Public Health (DPH) are included in the daily COVID-19 update. Data on Connecticut deaths were obtained from the Connecticut Deaths Registry maintained by the DPH Office of Vital Records. Cause of death was determined by a death certifier (e.g., physician, APRN, medical examiner) using their best clinical judgment. Additionally, all COVID-19 deaths, including suspected or related, are required to be reported to OCME. On April 4, 2020, CT DPH and OCME released a joint memo to providers and facilities within Connecticut providing guidelines for certifying deaths due to COVID-19 that were consistent with the CDC’s guidelines and a reminder of the required reporting to OCME.25,26 As of July 1, 2021, OCME had reviewed every case reported and performed additional investigation on about one-third of reported deaths to better ascertain if COVID-19 did or did not cause or contribute to the death. Some of these investigations resulted in the OCME performing postmortem swabs for PCR testing on individuals whose deaths were suspected to be due to COVID-19, but antemortem diagnosis was unable to be made.31 The OCME issued or re-issued about 10% of COVID-19 death certificates and, when appropriate, removed COVID-19 from the death certificate. For standardization and tabulation of mortality statistics, written cause of death statements made by the certifiers on death certificates are sent to the National Center for Health Statistics (NCHS) at the CDC which assigns cause of death codes according to the International Causes of Disease 10th Revision (ICD-10) classification system.25,26 COVID-19 deaths in this report are defined as those for which the death certificate has an ICD-10 code of U07.1 as either a primary (underlying) or a contributing cause of death. More information on COVID-19 mortality can be found at the following link: https://portal.ct.gov/DPH/Health-Information-Systems--Reporting/Mortality/Mortality-Statistics Data are reported d

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    Connecticut Courts, Inquests into Deaths 1711-1892

    internal-ct.data.socrata.com | Last Updated 2024-07-03T13:50:27.000Z

    Records of the Judicial Department Papers by Subject. Index to Inquests of Connecticut Deaths, 1711-1892 Starting in 1639, the General Court of Connecticut requested the Deputy “to consider of some orders concerning an inquiry into the death of any that happen either accidently or by violence” (Connecticut Colonial Record, Vol. 48, Pg. 42). Later in 1650 a Code of Laws was adopted in Connecticut which also included a provision that in case of a “very sudden, untimely or unnatural death , some Magistrate or the Constable of that Town shall forthwith summon a Jury of six or twelve discreet men to inquire of the cause and manner of their death” (Connecticut Colonial Record, Vol. 48, Pg. 523). For more than two hundred years, inquests into untimely accidental or violent deaths was the prevue of the Connecticut court system until the Connecticut General Assembly established the Office of the Coroner on May 1, 1883. Records of pre-1883 untimely deaths were generally handled via the county or superior courts found in each Connecticut county. This index covers the years 1711-1892 and references 2,120 Inquests into untimely accidental or violent deaths files from various County & Superior Courts for Fairfield, Hartford, Litchfield, Middlesex, New Haven, New London, Tolland, and Windham counties. In some cases, particularly for Tolland and Windham counties, coroner or medical examiner reports for the 1883-1892 time period were filed with the court. Please keep in mind that this index is not comprehensive and additional information may be found within the un-separated files and records of each court. This index includes the surname and given name of the individual, death year, town of death, cause of death, remarks of note taken from the document as well as the court and location of the original document. People may request a copy of a file by contacting the staff of the History & Genealogy Unit by telephone (860) 757-6580 or <a href="https://portal.ct.gov/csl/email-us?language=en_US">email</a>. When requesting a copy of a record, please include the name of the individual, date, and the specific court. Please understand that some files are extremely fragile and may not be able to be reproduced and/or read with ease. For more information about the judicial records stored at the Connecticut State Library, please see the on-line guide to <a href="https://libguides.ctstatelibrary.org/ld.php?content_id=76677446">Connecticut State Archives Record Group 003, Judicial Records</a>.