Locations
Illinois
Statistics on children, youth and families in Illinois from the Annie E. Casey Foundation and YWCA Metropolitan Chicago
Population by age group
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Note: Non-consecutive years appear adjacent in the trend line
because one or more years have been deselected.
because one or more years have been deselected.
Definition and Source
PROVIDER
Definition
Number and percentage of total population by age group of the population residing in respective Illinois geographic areas. Chicago defined as Cook County and the five collar counties (DuPage, Kane, Lake, McHenry, and Will).
Data Source
U.S. Census Bureau, Population Estimates Program.
Data for 2020 and 2021 are Vintage 2021 estimates. Data for 2010 through 2019 are Vintage 2020 population estimates. Each year the U.S. Census Bureau revises estimates back to the most recent Census. Therefore, data presented here may differ from previously published estimates. Figures for 2000 and 2010 represented revised population estimates for July 1, 2000 and July 1, 2010 - not actual Census counts from April 1, 2000 and April 1, 2010.
Data for 2020 and 2021 are Vintage 2021 estimates. Data for 2010 through 2019 are Vintage 2020 population estimates. Each year the U.S. Census Bureau revises estimates back to the most recent Census. Therefore, data presented here may differ from previously published estimates. Figures for 2000 and 2010 represented revised population estimates for July 1, 2000 and July 1, 2010 - not actual Census counts from April 1, 2000 and April 1, 2010.
Notes
Last Updated
December 2023