US location post office
Pennsylvania ZIP Codes
| ZIP Code | Type | City | County | County Code |
|---|---|---|---|---|
| 16020 | Standard | Boyers | Butler | 42019 |
| 16022 | POBox | Bruin | Butler | 42019 |
| 16023 | Standard | Cabot | Butler | 42019 |
| 16024 | POBox | Callery | Butler | 42019 |
| 16025 | Standard | Chicora | Butler | 42019 |
| 16027 | POBox | Connoquenessing | Butler | 42019 |
| 16028 | Standard | East Brady | Clarion | 42031 |
| 16029 | POBox | East Butler | Butler | 42019 |
| 16030 | POBox | Eau Claire | Butler | 42019 |
| 16033 | Standard | Evans City | Butler | 42019 |
| 16034 | Standard | Fenelton | Butler | 42019 |
| 16035 | POBox | Forestville | Butler | 42019 |
| 16036 | POBox | Foxburg | Clarion | 42031 |
| 16037 | Standard | Harmony | Butler | 42019 |
| 16038 | Standard | Harrisville | Butler | 42019 |
| 16040 | Standard | Hilliards | Butler | 42019 |
| 16041 | Standard | Karns City | Butler | 42019 |
| 16045 | Standard | Lyndora | Butler | 42019 |
| 16046 | Standard | Mars | Butler | 42019 |
| 16048 | POBox | North Washington | Butler | 42019 |
| 16049 | Standard | Parker | Clarion | 42031 |
| 16050 | Standard | Petrolia | Butler | 42019 |
| 16051 | Standard | Portersville | Butler | 42019 |
| 16052 | Standard | Prospect | Butler | 42019 |
| 16053 | Standard | Renfrew | Butler | 42019 |
| 16054 | POBox | Saint Petersburg | Clarion | 42031 |
| 16055 | Standard | Sarver | Butler | 42019 |
| 16056 | Standard | Saxonburg | Butler | 42019 |
| 16057 | Standard | Slippery Rock | Butler | 42019 |
| 16059 | Standard | Valencia | Butler | 42019 |
| 16061 | Standard | West Sunbury | Butler | 42019 |
| 16063 | Standard | Zelienople | Butler | 42019 |
| 16066 | Standard | Cranberry Township | Butler | 42019 |
| 16101 | Standard | New Castle | Lawrence | 42073 |
| 16102 | Standard | New Castle | Lawrence | 42073 |
| 16105 | Standard | New Castle | Lawrence | 42073 |
| 16110 | Standard | Adamsville | Crawford | 42039 |
| 16111 | Standard | Atlantic | Crawford | 42039 |
| 16112 | Standard | Bessemer | Lawrence | 42073 |
| 16113 | POBox | Clark | Mercer | 42085 |
| 16114 | Standard | Clarks Mills | Mercer | 42085 |
| 16115 | Standard | Darlington | Beaver | 42007 |
| 16116 | Standard | Edinburg | Lawrence | 42073 |
| 16117 | Standard | Ellwood City | Lawrence | 42073 |
| 16120 | Standard | Enon Valley | Lawrence | 42073 |
| 16121 | Standard | Farrell | Mercer | 42085 |
| 16123 | Standard | Fombell | Beaver | 42007 |
| 16124 | Standard | Fredonia | Mercer | 42085 |
| 16125 | Standard | Greenville | Mercer | 42085 |
| 16127 | Standard | Grove City | Mercer | 42085 |
Pennsylvania Cities & Towns
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