Get the Illinois demographic data that you need. You can get the most current Illinois data from the US Census Bureau without spending 8 to 10 high-value hours searching the internet.
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The Illinois demographics on this site are the most current data available from the US Census Bureau.
Currently, most data points are from 2021 datasets – specifically the 2021 American Community Survey (ACS) 5-year dataset. We use the Census' ACS 5-year dataset for 3 reasons.
We're constantly updating the demographic reports and this site with the most current data throughout the year.
Got questions about these Illinois demographics? Call us at 1-800-939-2130.
1 | Cook County | 5,265,398 |
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2 | DuPage County | 934,094 |
3 | Lake County | 714,484 |
4 | Will County | 696,403 |
5 | Kane County | 518,648 |
6 | McHenry County | 310,749 |
7 | Winnebago County | 285,471 |
8 | Madison County | 266,112 |
9 | St. Clair County | 258,597 |
10 | Champaign County | 206,583 |
1 | Chicago | 2,742,119 |
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2 | Aurora | 183,447 |
3 | Joliet | 150,323 |
4 | Naperville | 149,013 |
5 | Rockford | 148,942 |
6 | Springfield | 114,672 |
7 | Elgin | 114,156 |
8 | Peoria | 113,672 |
9 | Waukegan | 89,751 |
10 | Champaign | 88,343 |
Get the most important demographics for all cities, all counties or all zips in Illinois in an easy-to-use spreadsheet.
Add the most current US Census demographics for any 3 radius rings around your business to your business plan.
Illinois-Demographics.com is made by Cubit – a demographic data provider. Call us at 1-800-939-2130 or email us.
Cubit's co-founders have been working with data for a combined 36 years.
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