Zip Code Lookup - Ontario Street, Cook county Illinois
| City | ZipCode | Area Code(s) | County | state | Time Zone | MSA |
| Chicago (Chicago Zip Code Lookup) | 60611 (60611 Zip Code Lookup) | 312/872 | Cook | Illinois | Central | 1600 |
| Fort Dearborn (Fort Dearborn Zip Code Lookup) | 60611 (60611 Zip Code Lookup) | 312/872 | Cook | Illinois | Central | 1600 |
| Ontario Street (Ontario Street Zip Code Lookup) | 60611 (60611 Zip Code Lookup) | 312/872 | Cook | Illinois | Central | 1600 |