45999 is the ZIP Code for The Internal Revenue Service in Cincinnati, Kentucky. 45999 is entirely within Kenton County. Regionally, 45999 is located in Metro Cincinnati.
| ZIP Code Name | Cincinnati |
| Organization | The Internal Revenue Service |
| Primary County | Kenton County |
| ZIP Code Type | Unique |
| Current Time | EST |
| Coordinates | 39.08692551,-84.51430511 |
| Adjacent ZIP Codes | |
| Region | Metro Cincinnati |
| Metropolitan/Micropolitan Stat Area | Cincinnati, OH-KY-IN |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| School Districts in 45999 | |
| Elementary Schools in 45999 | |
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| High Schools in 45999 |