References

* **United States Census Bureau:** Population and demographic data. * **State of Illinois Official Portal (illinois.gov):** Government, civic, and structural information. * **Enjoy Illinois (Illinois Office of Tourism):** Travel, cultural, and landmark information. * **Illinois State Board of Education (ISBE):** Education metrics and public school statistics. * **Illinois Commerce Commission (ICC):** Utility and infrastructure regulation data. * **Illinois Environmental Protection Agency (IEPA):** Air and water quality data. * **FBI Uniform Crime Reporting (UCR) Program:** Law enforcement and safety statistics.