Illinois

Chicago, Cook County, Illinois, United States of America (41.87556 -87.62442)

Coordinates: 41.64453 -87.94010 42.02304 -87.52408 - Minimum elevation: 173 m - Maximum elevation: 323 m - Average elevation: 194 m

Gallatin County, Illinois, United States of America (37.75095 -88.22645)

Coordinates: 37.57308 -88.37424 37.91621 -88.02502 - Minimum elevation: 101 m - Maximum elevation: 327 m - Average elevation: 127 m

Illinois, United States of America (40.07966 -89.43373)

Coordinates: 36.97013 -91.51305 42.50829 -87.01992 - Minimum elevation: 65 m - Maximum elevation: 1,798 m - Average elevation: 254 m