County ZIP codes · Pennsylvania · FIPS 42019
Butler County, PA ZIP Codes
Butler County, Pennsylvania has 42 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 36 residential and 6 for PO boxes or a single organization. 31 of the residential ones lie mainly in Butler County and 5 mainly in a neighboring county; 15 cross the county line. Median household income ranges from $56,708 in 16050 (Petrolia) to $151,560 in 16046 (Mars) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Butler County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $71,722 and $93,077.
They carry 35 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 36 residential ZIP codes in Butler County
31 ZIP codes lie mainly in Butler County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16001 | Butler | 39,234 | 518 | $64k | $199k | 100% |
| 16066 | Cranberry Township | 33,873 | 1,515 | $124k | $420k | 100% |
| 16046 | Mars | 19,757 | 866 | $152k | $481k | 80% |
| 16057 | Slippery Rock | 15,718 | 177 | $58k | $243k | 86% |
| 16002 | Butler | 15,587 | 213 | $90k | $263k | 100% |
| 16059 | Valencia | 10,062 | 384 | $111k | $409k | 97% |
| 16055 | Sarver | 8,993 | 234 | $91k | $315k | 88% |
| 16063 | Zelienople | 8,256 | 487 | $96k | $339k | 78% |
| 16033 | Evans City | 8,185 | 266 | $108k | $333k | 100% |
| 16037 | Harmony | 5,291 | 154 | $93k | $348k | 86% |
| 16025 | Chicora | 4,793 | 88 | $72k | $210k | 88% |
| 16056 | Saxonburg | 4,232 | 201 | $76k | $302k | 100% |
| 16023 | Cabot | 4,082 | 156 | $86k | $256k | 100% |
| 16053 | Renfrew | 3,429 | 160 | $76k | $298k | 100% |
| 16038 | Harrisville | 3,292 | 72 | $73k | $175k | 62% |
| 16051 | Portersville | 3,119 | 78 | $89k | $216k | 60% |
| 16061 | West Sunbury | 2,564 | 60 | $75k | $197k | 100% |
| 16052 | Prospect | 2,215 | 123 | $82k | $247k | 100% |
| 16034 | Fenelton | 1,752 | 93 | $88k | $214k | 100% |
| 16041 | Karns City | 1,747 | 60 | $67k | $147k | 61% |
| 16020 | Boyers | 1,169 | 43 | $74k | $207k | 100% |
| 16045 | Lyndora | 1,136 | 1,878 | $73k | $132k | 100% |
| 16050 | Petrolia | 1,097 | 53 | $57k | $133k | 100% |
| 16040 | Hilliards | 1,013 | 53 | $85k | $178k | 100% |
| 16029 | East Butler | 916 | 1,180 | $62k | $145k | 100% |
| 16027 | Connoquenessing | 423 | 525 | $85k | $245k | 100% |
| 16030 | Eau Claire | 272 | 257 | $62k | $147k | 100% |
| 16035 | Forestville | 252 | 289 | $54k | $115k | 100% |
| 16048 | North Washington | 225 | 90 | $71k | $130k | 100% |
| 16022 | Bruin | 219 | 291 | $76k | $151k | 100% |
| 16024 | Callery | 210 | 633 | $73k | $143k | 100% |
Partly in Butler County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16049 | Parker | 2,965 | 33 | $63k | $133k | 43% |
| 15086 | Warrendale | 788 | 423 | $131k | $362k | 25% |
| 16229 | Freeport | 4,798 | 179 | $82k | $207k | 7% |
| 16373 | Emlenton | 3,254 | 40 | $63k | $136k | 7% |
| 15044 | Gibsonia | 27,370 | 701 | $137k | $385k | 3% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
15 ZIP codes of Butler County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Butler | Elsewhere |
|---|---|---|
| 15044 | 3% | Allegheny County 97% |
| 16046 | 80% | Allegheny County 20% |
| 16057 | 86% | Lawrence County 13%; Mercer County 1% |
| 16059 | 97% | Allegheny County 3% |
| 16055 | 88% | Armstrong County 12% |
| 16063 | 78% | Beaver County 22% |
| 16037 | 86% | Lawrence County 8%; Beaver County 6% |
| 16229 | 7% | Armstrong County 88%; Westmoreland County 5% |
| 16025 | 88% | Armstrong County 12% |
| 16038 | 62% | Venango County 38% |
| 16373 | 7% | Venango County 65%; Clarion County 28% |
| 16051 | 60% | Lawrence County 41% |
| 16049 | 43% | Clarion County 46%; Armstrong County 11% |
| 16041 | 61% | Armstrong County 39% |
| 15086 | 25% | Allegheny County 75% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Butler County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Butler County's ZIP codes use 4 prefixes: 150, 160, 162 and 163.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 150 | Pittsburgh, PA (SCF 150) | 2 | 76 |
| 160 | Pittsburgh, PA (SCF 150) | 38 | 42 |
| 162 | Pittsburgh, PA (SCF 150) | 1 | 44 |
| 163 | Pittsburgh, PA (SCF 150) | 1 | 49 |
38 of the 42 ZIP codes that start with 160 are Butler County's, all sorted at Pittsburgh, PA (SCF 150). The other 4 are 16028 (East Brady), 16036 (Foxburg), 16054 (Saint Petersburg), 16058 (Turkey City, PO Box or unique).
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.