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The population density of Cook County, IL was 5,526 in 2018.

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 Cook County, IL

  • API

    Population by 2010 Census Block

    data.cityofchicago.org | Last Updated 2019-01-18T18:44:11.000Z

    Population estimates by the U.S. Census Bureau by U.S. Census Block.

  • API

    Medical Examiner Indigent Cremations

    datacatalog.cookcountyil.gov | Last Updated 2023-11-17T19:34:00.000Z

    The following page lists the unclaimed indigents cremated by the Cook County Medical Examiner’s Office.

  • API

    Cook County Clerk -- Statement of Economic Interests Filers

    datacatalog.cookcountyil.gov | Last Updated 2021-02-03T22:52:16.000Z

    The update script for this dataset is currently broken. Please see the Cook County Clerk SEI Search for recent filings. For extended information about Statements of Economic Interests in Cook County IL, visit the Cook County Clerk's SEI search: http://ethics.cookcountyclerk.com/PublicSearch/

  • API

    Medical Examiner Case Archive

    datacatalog.cookcountyil.gov | Last Updated 2024-05-13T20:53:43.000Z

    Effective April 1, 2022, the Cook County Medical Examiner’s Office no longer takes jurisdiction over hospital, nursing home or hospice COVID-19 deaths unless there is another factor that falls within the Office’s jurisdiction. Data continues to be collected for COVID-19 deaths in Cook County on the Illinois Dept. of Public Health COVID-19 dashboard (https://dph.illinois.gov/covid19/data.html). This contains information about deaths that occurred in Cook County that were under the Medical Examiner’s jurisdiction. Not all deaths that occur in Cook County are reported to the Medical Examiner or fall under the jurisdiction of the Medical Examiner. The Medical Examiner’s Office determines cause and manner of death for those cases that fall under its jurisdiction. Cause of death describes the reason the person died. This dataset includes information from deaths starting in August 2014 to the present, with information updated daily. Changes: December 16, 2022: The Cook County Commissioner District field now reflects the boundaries that went into effect December 5, 2022. September 8, 2023: The Primary Cause field is now a combination of the Primary Cause Line A, Line B, and Line C fields.

  • API

    WAOFM - Census - Population and Housing, 2000 and 2010

    data.wa.gov | Last Updated 2021-09-01T17:20:31.000Z

    Population and housing information extracted from decennial census Public Law 94-171 redistricting summary files for Washington state for years 2000 and 2010.

  • API

    Human Resources - Compliance Officer’s Semi-Annual Reports

    datacatalog.cookcountyil.gov | Last Updated 2024-03-22T18:42:44.000Z

    These reports are issued every March 15th and September 15th. As required under the Employment Plan, Cook County Board President Toni Preckwinkle hired a Compliance Officer whose primary responsibilities include the following: 1. Overseeing compliance with the Employment Plan 2. Maintaining and reviewing the Exempt List 3. Accepting, investigating, and reporting on complaints related to Employment Actions and the Employment Plan 4. Taking steps to evaluate, eliminate, remedy and reporting instances of Political Contacts and Unlawful Political Discrimination; and 5. Training on Employment Plan and reviewing Policies and Procedures. If you would like to make a complaint alleging non-compliance with the Employment Plan, a Complaint Form is available or you can contact the Compliance Officer directly. Letitia Dominici, Compliance Officer 118 N. Clark Street, 8th Floor Chicago, IL 60602 Letitia.dominici@cookcountyil.gov

  • API

    CARES Act Equity Distribution Model Inputs

    datacatalog.cookcountyil.gov | Last Updated 2021-02-26T17:36:38.000Z

    This dataset provides inputs to the R model to equitably distribute CARES Act funding to underlying municipalities. Data is as of June 2020. For more information see: https://datacatalog.cookcountyil.gov/stories/s/yf8h-y2mv/

  • API

    Human Resources - Compliance Officer’s Quarterly Employment Action Reports

    datacatalog.cookcountyil.gov | Last Updated 2024-05-14T01:16:25.000Z

    In order to ensure Cook County’s commitment to transparency, reports on employment actions and monitoring activities are available. As required under the Employment Plan, Cook County Board President Toni Preckwinkle hired a Compliance Officer whose primary responsibilities include the following: 1. Overseeing compliance with the Employment Plan 2. Maintaining and reviewing the Exempt List 3. Accepting, investigating, and reporting on complaints related to Employment Actions and the Employment Plan 4. Taking steps to evaluate, eliminate, remedy and reporting instances of Political Contacts and Unlawful Political Discrimination; and 5. Training on Employment Plan and reviewing Policies and Procedures. If you would like to make a complaint alleging non-compliance with the Employment Plan, a Complaint Form is available or you can contact the Compliance Officer directly. Letitia Dominici, Compliance Officer 118 N. Clark Street, 8th Floor Chicago, IL 60602 Letitia.dominici@cookcountyil.gov

  • API

    Cook County Clerk - Lobbyist Activity

    datacatalog.cookcountyil.gov | Last Updated 2021-12-16T06:10:04.000Z

    This dataset is updated nightly. For extended information about Lobbyist Activities in Cook County IL, visit the Cook County Clerk's Lobbyist search: http://lobbyist.cookcountyclerk.com/Public/SearchHome.aspx

  • API

    Choose Maryland: Compare Counties - Demographics

    opendata.maryland.gov | Last Updated 2019-12-13T12:53:02.000Z

    Population profile - total, rate of change, age, and density.