County ZIP codes · Pennsylvania · FIPS 42055
Franklin County, PA ZIP Codes
Franklin County, Pennsylvania has 34 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 31 residential and 3 for PO boxes or a single organization. 28 of the residential ones lie mainly in Franklin County and 3 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $61,234 in 17201 to $96,318 in 17202 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Franklin 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 $71,181 and $80,903.
They carry 30 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 31 residential ZIP codes in Franklin County
28 ZIP codes lie mainly in Franklin County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 17202 | Chambersburg | 33,566 | 284 | $96k | $279k | 100% |
| 17268 | Waynesboro | 29,362 | 378 | $73k | $237k | 100% |
| 17201 | Chambersburg | 27,554 | 1,441 | $61k | $228k | 100% |
| 17225 | Greencastle | 20,347 | 249 | $89k | $304k | 100% |
| 17222 | Fayetteville | 10,550 | 162 | $80k | $256k | 69% |
| 17236 | Mercersburg | 8,845 | 70 | $79k | $240k | 95% |
| 17252 | Saint Thomas | 4,038 | 132 | $74k | $203k | 100% |
| 17244 | Orrstown | 2,263 | 85 | $71k | $208k | 100% |
| 17237 | Mont Alto | 1,759 | 716 | $81k | $194k | 100% |
| 17224 | Fort Loudon | 1,603 | 40 | $115k | $303k | 95% |
| 17214 | Blue Ridge Summit | 1,143 | 300 | $62k | $383k | 100% |
| 17262 | Spring Run | 1,048 | 55 | $88k | $222k | 100% |
| 17263 | State Line | 896 | 3,270 | $89k | $179k | 100% |
| 17247 | Quincy | 629 | 4,338 | $52k | – | 100% |
| 17235 | Marion | 622 | 1,101 | – | $190k | 100% |
| 17246 | Pleasant Hall | 542 | 249 | $75k | – | 100% |
| 17271 | Willow Hill | 527 | 41 | $93k | $204k | 100% |
| 17219 | Doylesburg | 484 | 36 | – | $201k | 100% |
| 17221 | Fannettsburg | 458 | 39 | $62k | $203k | 100% |
| 17254 | Scotland | 362 | 832 | $140k | $252k | 100% |
| 17220 | Dry Run | 347 | 25 | $66k | $302k | 100% |
| 17265 | Upperstrasburg | 300 | 10 | $45k | $204k | 100% |
| 17210 | Amberson | 242 | 15 | $62k | $223k | 100% |
| 17217 | Concord | 182 | 49 | $75k | $172k | 100% |
| 17251 | Roxbury | 70 | 35 | $93k | $154k | 100% |
| 17232 | Lurgan | 27 | 1,174 | – | – | 100% |
| 17250 | Rouzerville | no residents | 0 | – | – | 100% |
| 17261 | South Mountain | no residents | 0 | – | – | 100% |
Partly in Franklin County
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?
6 ZIP codes of Franklin County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Franklin | Elsewhere |
|---|---|---|
| 17257 | 36% | Cumberland County 64% |
| 17222 | 69% | Adams County 31% |
| 17236 | 95% | Fulton County 5% |
| 17240 | 39% | Cumberland County 61% |
| 17224 | 95% | Fulton County 5% |
| 17021 | 5% | Juniata County 77%; Perry County 16%; Huntingdon County 2% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 17231 | Lemasters |
| 17256 | Shady Grove |
| 17272 | Zullinger |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Franklin County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Franklin County's ZIP codes use 2 prefixes: 170 and 172.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.