What is the largest city in Illinois?
Chicago city is the largest city in Illinois with a population of 2,707,648, according to Census ACS 5-Year. Aurora city is second with 179,867.
Context
Illinois has 224 tracked cities of 10,000+ residents. The largest cities serve as economic and cultural centers, often with higher incomes and more diverse populations than surrounding rural areas.
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
Chicago city is the largest city in Illinois with a population of 2,707,648, according to Census ACS 5-Year. Aurora city is second with 179,867.