There are 31 zip codes in Butler County, Pennsylvania. The most populated is 16001, located in Butler. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | Population | City |
|---|---|---|
| 16001 | 39,808 | Butler |
| 16066 | 33,071 | Cranberry Township |
| 16046 | 18,772 | Mars |
| 16002 | 15,944 | Butler |
| 16057 | 15,067 | Slippery Rock |
| 16059 | 9,394 | Valencia |
| 16055 | 8,548 | Sarver |
| 16063 | 8,128 | Zelienople |
| 16033 | 7,376 | Evans City |
| 16025 | 4,858 | Chicora |
| 16037 | 4,709 | Harmony |
| 16056 | 4,620 | Saxonburg |
| 16023 | 4,387 | Cabot |
| 16053 | 3,478 | Renfrew |
| 16038 | 3,214 | Harrisville |
| 16051 | 3,035 | Portersville |
| 16061 | 2,705 | West Sunbury |
| 16052 | 2,321 | Prospect |
| 16041 | 2,105 | Karns City |
| 16034 | 1,831 | Fenelton |
| 16020 | 1,190 | Boyers |
| 16040 | 1,066 | Hilliards |
| 16045 | 999 | Lyndora |
| 16050 | 931 | Petrolia |
| 16029 | 906 | East Butler |
| 16027 | 392 | Connoquenessing |
| 16030 | 327 | Eau Claire |
| 16024 | 291 | Callery |
| 16022 | 279 | Bruin |
| 16048 | 221 | North Washington |
| 16035 | 141 | Forestville |