Facts
- Population
- 315,959 (2024)
- Change since 2020
- 1.8 %
- Net migration
- 932 (2023)
- Unemployment rate
- 4.1 % (2025)
- State
- Illinois
- Population base, April 2020
- 310,289 (2020)
- Births
- 3,139 (2023)
- Births per 1,000 residents, 2023
- 9.9
- Deaths
- 2,494 (2023)
- Deaths per 1,000 residents, 2023
- 7.9
- Natural change, 2023
- 645
- International migration
- 469 (2023)
- Domestic migration
- 463 (2023)
- Net migration per 1,000, 2023
- 2.9
- Postal code
- IL
- FIPS code
- 17111
Sources: US Census Bureau — Population Estimates, Bureau of Labor Statistics — LAUS
Unemployment rate, annual average
| Period | Value |
|---|---|
| 2025 | 4.1 % |
| 2024 | 4.5 % |
| 2023 | 3.7 % |
| 2022 | 3.9 % |
| 2021 | 4.8 % |
| 2020 | 8.3 % |
| 2019 | 3.4 % |
| 2018 | 3.6 % |
| 2017 | 4.5 % |
| 2016 | 5.4 % |
| 2015 | 5.5 % |
| 2014 | 6.7 % |
Population estimates, 2020–2024
| Period | Value |
|---|---|
| 2024 | 315,959 |
| 2023 | 313,435 |
| 2022 | 311,921 |
| 2021 | 311,669 |
| 2020 | 309,973 |