Cincinnati zipcode
| City | Cincinnati |
| ZIP Code | 45203 |
| Type | Standard |
| State Code | OH |
| State | Ohio |
ZIP code of Cincinnati is 45203. This place is located in Ohio state in US. To send any postal service to Cincinnati, you must use 45203 zipcode.
The ZIP code 45203 is also used with 1 more city name of Ohio.
- Queen City, OH