Cincinnati zipcode
| City | Cincinnati |
| ZIP Code | 45999 |
| Type | Company/Organization |
| State Code | OH |
| State | Ohio |
ZIP code of Cincinnati is 45999. This place is located in Ohio state in US. To send any postal service to Cincinnati, you must use 45999 zipcode.
You should avoid following 1 city name of Ohio to be used with the ZIP code 45999.
- Internal Revenue Service, OH