Geographic reference
Cook County, Illinois
Cook County is a county or county-equivalent in Illinois.
Reference details
- State
- Illinois (IL)
- Census GEOID
- 17031
- Land area
- 2,447.357 km²
- Water area
- 1,786.341 km²
- Representative point
- 41.894787, -87.645388
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.