ZIP Code 16003 is located in Butler Pennsylvania. 16003 is entirely within Butler County. Regionally, it is located in Metro Pittsburgh.
| ZIP Code Name | Butler |
| Primary County | Butler County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 40.85753632,-79.89533234 |
| Adjacent ZIP Codes | |
| Region | Metro Pittsburgh |
| Metropolitan/Micropolitan Stat Area | Pittsburgh, PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 0.00032730 Square Miles |