First three digits · Pennsylvania
ZIP Codes Starting with
77 ZIP codes start with 156, sorted at the Pittsburgh, PA (SCF 150) sectional center (USPS labeling list L005, effective October 1, 2026) in Pennsylvania: 72 residential ZIP codes across 4 counties and 5 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 156 mean?
The first digit, 1, is one of ten national areas (Delaware, New York and Pennsylvania). The first three, 156, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 156 to the Pittsburgh, PA (SCF 150) facility. The last two digits pick the delivery area. By residents, the largest town names among the 156 ZIP codes are Greensburg, Irwin, Latrobe, Jeannette, Mount Pleasant and Murrysville.
The same facility sorts 15 prefixes, 760 ZIP codes in all: 150, 151, 152, 153, 154, 156, 160, 161, 162, 163, 164, 165, 260, 265, 439.
Where are the 156 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 156
| County | ||||||
|---|---|---|---|---|---|---|
| 15601 | Greensburg | Westmoreland County | 56,425 | 700 | $79k | $228k |
| 15605 | Greensburg | Westmoreland County | PO Box or unique | – | – | – |
| 15606 | Greensburg | Westmoreland County | PO Box or unique | – | – | – |
| 15610 | Acme | Westmoreland County | 3,988 | 101 | $73k | $197k |
| 15611 | Adamsburg | Westmoreland County | 241 | 346 | $64k | $129k |
| 15612 | Alverton | Westmoreland County | 443 | 206 | $59k | – |
| 15613 | Apollo | Westmoreland County | 12,854 | 222 | $72k | $179k |
| 15615 | Ardara | Westmoreland County | 148 | 285 | $89k | $139k |
| 15616 | Armbrust | Westmoreland County | 363 | 287 | $116k | $318k |
| 15617 | Arona | Westmoreland County | 262 | 529 | $73k | $160k |
| 15618 | Avonmore | Armstrong County | 2,386 | 82 | $62k | $114k |
| 15619 | Bovard | Westmoreland County | 488 | 722 | – | $153k |
| 15620 | Bradenville | Westmoreland County | 801 | 878 | $60k | $146k |
| 15621 | Calumet | Westmoreland County | PO Box or unique | – | – | – |
| 15622 | Champion | Fayette County | 682 | 19 | $47k | $279k |
| 15623 | Claridge | Westmoreland County | 1,135 | 953 | $57k | $252k |
| 15624 | Crabtree | Westmoreland County | 218 | 449 | – | – |
| 15625 | Darragh | Westmoreland County | 58 | 97 | – | – |
| 15626 | Delmont | Westmoreland County | 5,129 | 1,194 | $61k | $242k |
| 15627 | Derry | Westmoreland County | 6,167 | 195 | $59k | $157k |
| 15628 | Donegal | Westmoreland County | 458 | 253 | $64k | $159k |
| 15629 | East Vandergrift | Westmoreland County | 631 | 5,008 | $55k | $70k |
| 15631 | Everson | Fayette County | 672 | 1,194 | $53k | $91k |
| 15632 | Export | Westmoreland County | 8,377 | 281 | $94k | $291k |
| 15633 | Forbes Road | Westmoreland County | 682 | 241 | $114k | $261k |
| 15634 | Grapeville | Westmoreland County | 421 | 3,315 | $62k | $105k |
| 15635 | Hannastown | Westmoreland County | 228 | 803 | – | $163k |
| 15636 | Harrison City | Westmoreland County | 3,560 | 1,475 | $146k | $369k |
| 15637 | Herminie | Westmoreland County | 1,821 | 377 | $71k | $221k |
| 15638 | Hostetter | Westmoreland County | 104 | 675 | – | – |
| 15639 | Hunker | Westmoreland County | 2,160 | 198 | $80k | $231k |
| 15640 | Hutchinson | Westmoreland County | 355 | 883 | $83k | $106k |
| 15641 | Hyde Park | Westmoreland County | 464 | 1,933 | $66k | $142k |
| 15642 | Irwin | Westmoreland County | 46,325 | 1,006 | $98k | $244k |
| 15644 | Jeannette | Westmoreland County | 18,512 | 836 | $65k | $169k |
| 15646 | Jones Mills | Westmoreland County | 161 | 146 | – | – |
| 15647 | Larimer | Westmoreland County | 49 | 605 | – | – |
| 15650 | Latrobe | Westmoreland County | 26,312 | 355 | $63k | $182k |
| 15655 | Laughlintown | Westmoreland County | 357 | 30 | $32k | $148k |
| 15656 | Leechburg | Westmoreland County | 9,506 | 298 | $68k | $163k |
| 15658 | Ligonier | Westmoreland County | 8,115 | 88 | $83k | $245k |
| 15660 | Lowber | Westmoreland County | 299 | 1,150 | – | $168k |
| 15661 | Loyalhanna | Westmoreland County | 858 | 2,194 | $81k | $168k |
| 15662 | Luxor | Westmoreland County | 969 | 646 | $84k | $109k |
| 15663 | Madison | Westmoreland County | 377 | 395 | $76k | $214k |
| 15664 | Mammoth | Westmoreland County | PO Box or unique | – | – | – |
| 15665 | Manor | Westmoreland County | 1,339 | 1,503 | $82k | $190k |
| 15666 | Mount Pleasant | Westmoreland County | 15,980 | 300 | $68k | $163k |
| 15668 | Murrysville | Westmoreland County | 14,584 | 651 | $125k | $347k |
| 15670 | New Alexandria | Westmoreland County | 3,675 | 90 | $79k | $195k |
| 15671 | New Derry | Westmoreland County | 671 | 291 | $66k | $184k |
| 15672 | New Stanton | Westmoreland County | 3,321 | 297 | $67k | $240k |
| 15673 | North Apollo | Armstrong County | 1,156 | 2,141 | $67k | $141k |
| 15674 | Norvelt | Westmoreland County | 158 | 562 | $87k | $188k |
| 15675 | Penn | Westmoreland County | 1,290 | 1,226 | $76k | $113k |
| 15676 | Pleasant Unity | Westmoreland County | 544 | 469 | – | $270k |
| 15677 | Rector | Westmoreland County | 516 | 21 | $52k | $226k |
| 15678 | Rillton | Westmoreland County | 472 | 357 | $66k | $160k |
| 15679 | Ruffs Dale | Westmoreland County | 2,781 | 126 | $77k | $200k |
| 15680 | Salina | Westmoreland County | 230 | 1,667 | $46k | – |
| 15681 | Saltsburg | Indiana County | 4,698 | 88 | $73k | $156k |
| 15682 | Schenley | Armstrong County | 234 | 87 | $88k | $152k |
| 15683 | Scottdale | Westmoreland County | 7,643 | 407 | $52k | $150k |
| 15684 | Slickville | Westmoreland County | 201 | 79 | $64k | $105k |
| 15685 | Southwest | Westmoreland County | PO Box or unique | – | – | – |
| 15686 | Spring Church | Armstrong County | 1,102 | 100 | $50k | $227k |
| 15687 | Stahlstown | Westmoreland County | 1,241 | 41 | $55k | $190k |
| 15688 | Tarrs | Westmoreland County | 612 | 294 | $81k | $90k |
| 15689 | United | Westmoreland County | 92 | 254 | – | – |
| 15690 | Vandergrift | Armstrong County | 8,985 | 341 | $56k | $112k |
| 15691 | Wendel | Westmoreland County | 302 | 3,471 | $168k | $228k |
| 15692 | Westmoreland City | Westmoreland County | 992 | 3,129 | $72k | $143k |
| 15693 | Whitney | Westmoreland County | 277 | 566 | $49k | $87k |
| 15695 | Wyano | Westmoreland County | 181 | 361 | $44k | $158k |
| 15696 | Youngstown | Westmoreland County | 218 | 1,964 | $65k | $127k |
| 15697 | Youngwood | Westmoreland County | 2,877 | 1,609 | $65k | $171k |
| 15698 | Yukon | Westmoreland County | 789 | 550 | $49k | $119k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.