In 2023, about **** percent of the population in Illinois was between the ages of 25 and 34 years old. A further **** percent of people in Illinois were between the ages of 35 and 44 years old.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÀÖ²¥´«Ã½app×îа汾 can support your business.
U.S. Census Bureau. (September 30, 2024). Distribution of resident population of Illinois in the United States in 2023, by age group [Graph]. In ÀÖ²¥´«Ã½app×îа汾. Retrieved August 17, 2026, from /statistics/910817/illinois-population-share-age-group/
U.S. Census Bureau. "Distribution of resident population of Illinois in the United States in 2023, by age group." Chart. September 30, 2024. ÀÖ²¥´«Ã½app×îа汾. Accessed August 17, 2026. /statistics/910817/illinois-population-share-age-group/
U.S. Census Bureau. (2024). Distribution of resident population of Illinois in the United States in 2023, by age group. ÀÖ²¥´«Ã½app×îа汾. ÀÖ²¥´«Ã½app×îа汾 Inc.. Accessed: August 17, 2026. /statistics/910817/illinois-population-share-age-group/
U.S. Census Bureau. "Distribution of Resident Population of Illinois in The United States in 2023, by Age Group." ÀÖ²¥´«Ã½app×îа汾, ÀÖ²¥´«Ã½app×îа汾 Inc., 30 Sep 2024, /statistics/910817/illinois-population-share-age-group/
U.S. Census Bureau, Distribution of resident population of Illinois in the United States in 2023, by age group ÀÖ²¥´«Ã½app×îа汾, /statistics/910817/illinois-population-share-age-group/ (last visited August 17, 2026)
Distribution of resident population of Illinois in the United States in 2023, by age group [Graph], U.S. Census Bureau, September 30, 2024. [Online]. Available: /statistics/910817/illinois-population-share-age-group/
