Illinois Outline Illinois Demographics by Cubit

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Free Illinois Demographic Starter Report

Get the Illinois demographic data that you need instantly. 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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To learn more, click on the letter that the name of your city or county begins with.

How Current are the Data?

The Illinois demographics on this site are the most current data available from the US Census Bureau.

The US Census Bureau provides more current data for big geographies like the state of Illinois than they do for small geographies like Sciota – which is why we can't say all of our data are from a particular year.

Most data points are from either 2013 or 2012 datasets. The Census Bureau will release additional 2013 data sets in December 2014, and we'll update our data just as soon as the new Census data are released.

Got questions about how current the data are for a particular county or city in Illinois? Call us at 1-800-939-2130.

About Us

Illinois-Demographics.com is made by Cubit – a demographic data provider. Call us at 1-800-939-2130 or email us.

25 Combined years Cubit's co-founders have been working with data.

Cubit Founders Kristen and Anthony

2,720 Cubit Customers since 2009.

Illinois Counties by Population

1 Cook County 5,240,700
2 DuPage County 932,126
3 Lake County 703,019
4 Will County 682,829
5 Kane County 523,643
6 McHenry County 307,409
7 Winnebago County 290,666
8 Madison County 267,225
9 St. Clair County 266,955
10 Champaign County 204,897

Illinois Cities by Population

1 Chicago 2,718,782
2 Aurora 199,963
3 Rockford 150,251
4 Joliet 147,806
5 Naperville 144,864
6 Springfield 117,006
7 Peoria 116,513
8 Elgin 110,145
9 Waukegan 88,826
10 Cicero 84,103

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