| Chicago | ~ 2,611,867 |
| Aurora | ~ 175,795 |
| Naperville | ~ 150,795 |
| Joliet | ~ 150,647 |
| Rockford | ~ 144,420 |
| Elgin | ~ 112,438 |
| Springfield (capital) | ~ 111,374 |
| Chicago | ~ 2,611,867 |
| Aurora | ~ 175,795 |
| Naperville | ~ 150,795 |
| Joliet | ~ 150,647 |
| Rockford | ~ 144,420 |
| Elgin | ~ 112,438 |
| Springfield (capital) | ~ 111,374 |
J. B. Pritzke : Democratic Party
Major corridors include:
East-west: Interstate 80, Interstate 90, Interstate 70.
North-south: Interstate 55, Interstate 57.
Other important interstates: Interstate 74 (across central Illinois)
Illinois State Fair in Springfield (agricultural fair, mid-August)
Bud Billiken Parade and Picnic in Chicago — the largest African-American parade in the U.S., held each August.
Chicago’s tradition of dyeing the Chicago River green for St. Patrick’s Day and major parades.
Various town-festivals: e.g., the Long Grove Strawberry Festival (June, Long Grove) and the Sycamore Pumpkin Festival (October) highlighting local harvest/seasonal themes.
Regional events like balloon races, heritage festivals, and specialty gatherings (e.g., hot-air balloon festival in Galena)
Humid continental / Humid subtropical transition climate (depending on the region)
| Mes | 2025 | 2026 |
|---|---|---|
| Enero | Lunes 13 | Sábado 3 |
| Febrero | Miércoles 12 | Domingo 1 |
| Marzo | Jueves 13 | Martes 3 |
| Abril | Sábado 12 | Miércoles 1 |
| Mayo | Lunes 12 | Viernes 1 |
| Junio | Miércoles 11 | Lunes 29 |
| Julio | Jueves 10 | Miércoles 29 |
| Agosto | Sábado 9 | Jueves 27 |
| Septiembre | Domingo 7 | Sábado 26 |
| Octubre | Lunes 6 | Domingo 25 |
| Noviembre | Miércoles 5 | Martes 24 |
| Diciembre | Jueves 4 | Miércoles 23 |