First three digits · Pennsylvania
ZIP Codes Starting with
58 ZIP codes start with 173, sorted at the Harrisburg, PA (SCF 170) sectional center (USPS labeling list L005, effective October 1, 2026) in Pennsylvania: 48 residential ZIP codes across 3 counties and 10 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 173 mean?
The first digit, 1, is one of ten national areas (Delaware, New York and Pennsylvania). The first three, 173, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 173 to the Harrisburg, PA (SCF 170) facility. The last two digits pick the delivery area. By residents, the largest town names among the 173 ZIP codes are Hanover, Gettysburg, Dover, Red Lion, Spring Grove and New Oxford.
The same facility sorts 14 prefixes, 576 ZIP codes in all: 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 195, 196, 254.
Where are the 173 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 173
| County | ||||||
|---|---|---|---|---|---|---|
| 17301 | Abbottstown | Adams County | 4,133 | 348 | $85k | $251k |
| 17302 | Airville | York County | 2,834 | 70 | $82k | $247k |
| 17303 | Arendtsville | Adams County | 395 | 2,297 | $82k | $195k |
| 17304 | Aspers | Adams County | 3,171 | 130 | $85k | $248k |
| 17306 | Bendersville | Adams County | 537 | 2,201 | $75k | $203k |
| 17307 | Biglerville | Adams County | 5,467 | 92 | $89k | $258k |
| 17309 | Brogue | York County | 1,393 | 61 | $85k | $263k |
| 17310 | Cashtown | Adams County | PO Box or unique | – | – | – |
| 17311 | Codorus | York County | 127 | 2,540 | $78k | $160k |
| 17312 | Craley | York County | PO Box or unique | – | – | – |
| 17313 | Dallastown | York County | 11,428 | 1,170 | $70k | $238k |
| 17314 | Delta | York County | 6,640 | 189 | $96k | $269k |
| 17315 | Dover | York County | 25,760 | 443 | $83k | $235k |
| 17316 | East Berlin | Adams County | 8,497 | 207 | $91k | $293k |
| 17317 | East Prospect | York County | 466 | 2,415 | $89k | $221k |
| 17318 | Emigsville | York County | 230 | 215 | – | – |
| 17319 | Etters | York County | 11,292 | 672 | $100k | $237k |
| 17320 | Fairfield | Adams County | 8,124 | 143 | $90k | $295k |
| 17321 | Fawn Grove | York County | 2,419 | 143 | $114k | $291k |
| 17322 | Felton | York County | 6,473 | 164 | $103k | $262k |
| 17323 | Franklintown | York County | 83 | 1,258 | – | $160k |
| 17324 | Gardners | Cumberland County | 4,433 | 83 | $78k | $254k |
| 17325 | Gettysburg | Adams County | 30,373 | 241 | $81k | $287k |
| 17327 | Glen Rock | York County | 7,828 | 170 | $101k | $316k |
| 17329 | Glenville | York County | 2,999 | 170 | $121k | $331k |
| 17331 | Hanover | York County | 56,443 | 758 | $80k | $241k |
| 17332 | Hanover | York County | PO Box or unique | – | – | – |
| 17333 | Hanover | York County | PO Box or unique | – | – | – |
| 17334 | Hanover | York County | PO Box or unique | – | – | – |
| 17335 | Hanover | York County | PO Box or unique | – | – | – |
| 17337 | Idaville | Adams County | PO Box or unique | – | – | – |
| 17339 | Lewisberry | York County | 6,281 | 234 | $97k | $300k |
| 17340 | Littlestown | Adams County | 11,405 | 290 | $90k | $298k |
| 17342 | Loganville | York County | 563 | 2,217 | $92k | $313k |
| 17343 | McKnightstown | Adams County | 31 | 43 | – | – |
| 17344 | McSherrystown | Adams County | 3,719 | 4,979 | $66k | $194k |
| 17345 | Manchester | York County | 7,715 | 643 | $93k | $223k |
| 17347 | Mount Wolf | York County | 6,393 | 504 | $98k | $254k |
| 17349 | New Freedom | York County | 8,254 | 391 | $121k | $369k |
| 17350 | New Oxford | Adams County | 13,169 | 297 | $79k | $237k |
| 17352 | New Park | York County | 1,288 | 96 | $126k | $339k |
| 17353 | Orrtanna | Adams County | 2,825 | 73 | $100k | $264k |
| 17354 | Porters Sideling | York County | PO Box or unique | – | – | – |
| 17355 | Railroad | York County | 322 | 523 | – | $221k |
| 17356 | Red Lion | York County | 22,869 | 684 | $87k | $241k |
| 17358 | Rossville | York County | PO Box or unique | – | – | – |
| 17360 | Seven Valleys | York County | 5,735 | 229 | $98k | $303k |
| 17361 | Shrewsbury | York County | 6,156 | 2,019 | $105k | $298k |
| 17362 | Spring Grove | York County | 14,730 | 300 | $99k | $292k |
| 17363 | Stewartstown | York County | 8,553 | 232 | $107k | $320k |
| 17364 | Thomasville | York County | 4,209 | 242 | $76k | $216k |
| 17365 | Wellsville | York County | 2,897 | 139 | $92k | $262k |
| 17366 | Windsor | York County | 6,392 | 565 | $83k | $211k |
| 17368 | Wrightsville | York County | 7,005 | 374 | $93k | $224k |
| 17370 | York Haven | York County | 7,090 | 536 | $90k | $250k |
| 17371 | York New Salem | York County | 375 | 1,838 | $107k | $198k |
| 17372 | York Springs | Adams County | 4,045 | 120 | $82k | $283k |
| 17375 | Peach Glen | Adams County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.