Population — Illinois
AnnualNot seasonally adjustedCode US-IL.POP.A.NSA
Population — Illinois was 12,719,141 persons in 2025, up 0.1% from 2024.
That is the highest reading since 2020.
Over the past ten years it has ranged from 12,609,577 persons (2022) to 12,963,110 persons (2015), averaging 12,793,789 persons.
Showing the full history (downsampled for display). Open the interactive chart to zoom and switch transforms.
Recent data
| Period | Value |
|---|---|
| 2025 | 12,719,141 persons |
| 2024 | 12,703,033 persons |
| 2023 | 12,633,389 persons |
| 2022 | 12,609,577 persons |
| 2021 | 12,703,354 persons |
| 2020 | 12,795,348 persons |
| 2019 | 12,849,440 persons |
| 2018 | 12,887,397 persons |
| 2017 | 12,922,894 persons |
| 2016 | 12,944,999 persons |
| 2015 | 12,963,110 persons |
| 2014 | 12,968,905 persons |
| 2013 | 12,959,880 persons |
| 2012 | 12,927,420 persons |
| 2011 | 12,892,409 persons |
| 2010 | 12,845,460 persons |
| 2009 | 12,796,778 persons |
| 2008 | 12,747,038 persons |
| 2007 | 12,695,866 persons |
| 2006 | 12,643,955 persons |
| 2005 | 12,609,903 persons |
| 2004 | 12,589,773 persons |
| 2003 | 12,556,006 persons |
| 2002 | 12,525,556 persons |
Last 24 observations. The full history (97 observations) is available through the API.
One guessable code, agency-direct, updated on release. Free tier available.
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
"https://makrognosis.robomacro.com/v1/series/US-IL.POP.A.NSA"
# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US-IL.POP.A.NSA",
headers={"X-API-Key": KEY})
obs = r.json()["observations"]About this series
| Latest observation | 2025 |
|---|---|
| First observation | 1929 |
| Observations | 97 |
| Frequency | Annual |
| Units | persons |
| Adjustment | Not seasonally adjusted |
| 10-year high | 12,963,110 persons (2015) |
| 10-year low | 12,609,577 persons (2022) |
| 10-year average | 12,793,789 persons |
| Source agency | U.S. Bureau of Economic Analysis (Regional Economic Accounts) |
| Makrognosis code | US-IL.POP.A.NSA |
This series is a labelled reference series (an official figure republished by an aggregator) rather than a first print from the agency itself.
Other United States indicators
National figure
FAQ
- Where does this data come from?
- It is collected directly from U.S. Bureau of Economic Analysis (Regional Economic Accounts) and is available through the Makrognosis API under the code US-IL.POP.A.NSA.
Last updated 2026-07-12. Source: U.S. Bureau of Economic Analysis (Regional Economic Accounts). Original title: “Population — Illinois”.