County ZIP codes · Pennsylvania · FIPS 42085
Mercer County, PA ZIP Codes
Mercer County, Pennsylvania has 28 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 20 of the residential ones lie mainly in Mercer County and 8 mainly in a neighboring county; 14 cross the county line. Median household income ranges from $42,595 in 16121 (Farrell) to $85,375 in 16143 (Pulaski) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Mercer 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 $57,870 and $70,490.
They carry 28 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 28 residential ZIP codes in Mercer County
20 ZIP codes lie mainly in Mercer County; 8 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16125 | Greenville | 17,178 | 163 | $55k | $150k | 98% |
| 16148 | Hermitage | 16,545 | 525 | $71k | $198k | 100% |
| 16127 | Grove City | 15,117 | 206 | $72k | $214k | 90% |
| 16146 | Sharon | 12,936 | 3,246 | $46k | $79k | 100% |
| 16137 | Mercer | 12,490 | 115 | $71k | $187k | 100% |
| 16150 | Sharpsville | 6,856 | 296 | $56k | $148k | 100% |
| 16142 | New Wilmington | 5,522 | 126 | $84k | $226k | 62% |
| 16159 | West Middlesex | 4,455 | 159 | $69k | $178k | 90% |
| 16121 | Farrell | 4,199 | 1,845 | $43k | $88k | 100% |
| 16145 | Sandy Lake | 2,660 | 57 | $67k | $180k | 100% |
| 16154 | Transfer | 2,539 | 94 | $58k | $167k | 100% |
| 16153 | Stoneboro | 2,234 | 52 | $64k | $149k | 87% |
| 16130 | Hadley | 1,810 | 59 | $59k | $154k | 100% |
| 16124 | Fredonia | 1,462 | 54 | $56k | $172k | 100% |
| 16133 | Jackson Center | 1,425 | 52 | $77k | $201k | 100% |
| 16161 | Wheatland | 819 | 2,617 | $41k | $68k | 100% |
| 16114 | Clarks Mills | 579 | 51 | $70k | $200k | 100% |
| 16311 | Carlton | 421 | 29 | $71k | $138k | 95% |
| 16113 | Clark | 358 | 673 | $60k | $224k | 100% |
| 16151 | Sheakleyville | 52 | 684 | $74k | $88k | 100% |
Partly in Mercer County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16134 | Jamestown | 3,992 | 84 | $64k | $149k | 46% |
| 16143 | Pulaski | 2,100 | 86 | $85k | $175k | 29% |
| 16110 | Adamsville | 295 | 38 | $81k | $155k | 24% |
| 16156 | Volant | 3,431 | 67 | $69k | $221k | 21% |
| 16314 | Cochranton | 5,188 | 56 | $70k | $164k | 11% |
| 16362 | Utica | 1,066 | 38 | $66k | $183k | 11% |
| 16342 | Polk | 2,126 | 32 | $64k | $115k | 3% |
| 16057 | Slippery Rock | 15,718 | 177 | $58k | $243k | 1% |
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?
14 ZIP codes of Mercer County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Mercer | Elsewhere |
|---|---|---|
| 16125 | 98% | Crawford County 2% |
| 16057 | 1% | Butler County 86%; Lawrence County 13% |
| 16127 | 90% | Venango County 8%; Lawrence County 2% |
| 16142 | 62% | Lawrence County 38% |
| 16314 | 11% | Crawford County 81%; Venango County 8% |
| 16159 | 90% | Lawrence County 10% |
| 16134 | 46% | Crawford County 54% |
| 16156 | 21% | Lawrence County 79% |
| 16153 | 87% | Venango County 13% |
| 16342 | 3% | Venango County 97% |
| 16143 | 29% | Lawrence County 71% |
| 16362 | 11% | Venango County 89% |
| 16311 | 95% | Venango County 5% |
| 16110 | 24% | Crawford County 76% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Mercer County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Mercer County's ZIP codes use 3 prefixes: 160, 161 and 163.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 160 | Pittsburgh, PA (SCF 150) | 1 | 42 |
| 161 | Pittsburgh, PA (SCF 150) | 23 | 45 |
| 163 | Pittsburgh, PA (SCF 150) | 4 | 49 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.