100 Smallest ZIP Codes in the United States by Population in Butler County, Pennsylvania
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Butler County, Pennsylvania.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 16035 | FORESTVILLE | PA | 141 |
| 2 | 16048 | NORTH WASHINGTON | PA | 221 |
| 3 | 16022 | BRUIN | PA | 279 |
| 4 | 16024 | CALLERY | PA | 291 |
| 5 | 16030 | EAU CLAIRE | PA | 327 |
| 6 | 16027 | CONNOQUENESSING | PA | 392 |
| 7 | 16029 | EAST BUTLER | PA | 906 |
| 8 | 16050 | PETROLIA | PA | 931 |
| 9 | 16045 | LYNDORA | PA | 999 |
| 10 | 16040 | HILLIARDS | PA | 1,066 |
| 11 | 16020 | BOYERS | PA | 1,190 |
| 12 | 16034 | FENELTON | PA | 1,831 |
| 13 | 16041 | KARNS CITY | PA | 2,105 |
| 14 | 16052 | PROSPECT | PA | 2,321 |
| 15 | 16061 | WEST SUNBURY | PA | 2,705 |
| 16 | 16051 | PORTERSVILLE | PA | 3,035 |
| 17 | 16038 | HARRISVILLE | PA | 3,214 |
| 18 | 16053 | RENFREW | PA | 3,478 |
| 19 | 16023 | CABOT | PA | 4,387 |
| 20 | 16056 | SAXONBURG | PA | 4,620 |
| 21 | 16037 | HARMONY | PA | 4,709 |
| 22 | 16025 | CHICORA | PA | 4,858 |
| 23 | 16033 | EVANS CITY | PA | 7,376 |
| 24 | 16063 | ZELIENOPLE | PA | 8,128 |
| 25 | 16055 | SARVER | PA | 8,548 |
| 26 | 16059 | VALENCIA | PA | 9,394 |
| 27 | 16057 | SLIPPERY ROCK | PA | 15,067 |
| 28 | 16002 | BUTLER | PA | 15,944 |
| 29 | 16046 | MARS | PA | 18,772 |
| 30 | 16066 | CRANBERRY TOWNSHIP | PA | 33,071 |
| 31 | 16001 | BUTLER | PA | 39,808 |