What is the population of Illinois?
Illinois has a population of 12,692,653, making it the #6 most populated state, according to Census ACS 5-Year estimates. The median age is 38.9 and the median household income is $81,702.
Context
Illinois's population places it in the upper half of states by population. Population data comes from the American Community Survey 5-Year estimates, which average data over a 60-month period and are the most reliable source for sub-national demographics.
Top 10
| Chicago city | 2,707,648 |
| Aurora city | 179,867 |
| Joliet city | 149,785 |
| Naperville city | 149,424 |
| Rockford city | 147,649 |
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Frequently Asked Questions
Illinois has a population of 12,692,653, making it the #6 most populated state, according to Census ACS 5-Year estimates. The median age is 38.9 and the median household income is $81,702.