Illinois Cook County
Maps of Cook County. Statistics and Facts about Cook County in Illinois.
- Cook County is the largest county in Illinois by population.
- Cook County is the largest county in Illinois by area.
| Area | 4,237.428 km2 |
| Population | 5,240,700 |
Maps of Cook County. Statistics and Facts about Cook County in Illinois.
| Area | 4,237.428 km2 |
| Population | 5,240,700 |