First three digits · Pennsylvania
ZIP Codes Starting with
37 ZIP codes start with 188, sorted at the Scranton, PA (SCF 184) sectional center (USPS labeling list L005, effective October 1, 2026) in Pennsylvania: 34 residential ZIP codes across 2 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 188 mean?
The first digit, 1, is one of ten national areas (Delaware, New York and Pennsylvania). The first three, 188, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 188 to the Scranton, PA (SCF 184) facility. The last two digits pick the delivery area. By residents, the largest town names among the 188 ZIP codes are Sayre, Towanda, Montrose, Athens, Susquehanna and Wyalusing.
The same facility sorts 5 prefixes, 169 ZIP codes in all: 184, 185, 186, 187, 188.
Where are the 188 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 188
| County | ||||||
|---|---|---|---|---|---|---|
| 18801 | Montrose | Susquehanna County | 8,102 | 45 | $71k | $234k |
| 18810 | Athens | Bradford County | 5,774 | 122 | $59k | $208k |
| 18812 | Brackney | Susquehanna County | 1,537 | 53 | $90k | $271k |
| 18813 | Brooklyn | Susquehanna County | PO Box or unique | – | – | – |
| 18814 | Burlington | Bradford County | 200 | 258 | $60k | $229k |
| 18815 | Camptown | Bradford County | PO Box or unique | – | – | – |
| 18816 | Dimock | Susquehanna County | 132 | 110 | $103k | $188k |
| 18817 | East Smithfield | Bradford County | 74 | 98 | $68k | $219k |
| 18818 | Friendsville | Susquehanna County | 1,371 | 33 | $63k | $240k |
| 18820 | Gibson | Susquehanna County | 36 | 21 | – | – |
| 18821 | Great Bend | Susquehanna County | 1,044 | 276 | $53k | $172k |
| 18822 | Hallstead | Susquehanna County | 3,084 | 71 | $60k | $204k |
| 18823 | Harford | Susquehanna County | 132 | 108 | – | $254k |
| 18824 | Hop Bottom | Susquehanna County | 1,408 | 51 | $72k | $174k |
| 18825 | Jackson | Susquehanna County | 137 | 37 | $73k | $264k |
| 18826 | Kingsley | Susquehanna County | 1,466 | 32 | $89k | $268k |
| 18827 | Lanesboro | Susquehanna County | PO Box or unique | – | – | – |
| 18828 | Lawton | Susquehanna County | 146 | 20 | $57k | $248k |
| 18829 | Le Raysville | Bradford County | 754 | 31 | $85k | $220k |
| 18830 | Little Meadows | Susquehanna County | 593 | 25 | $68k | $235k |
| 18831 | Milan | Bradford County | 1,081 | 34 | $82k | $217k |
| 18832 | Monroeton | Bradford County | 1,924 | 33 | $53k | $152k |
| 18833 | New Albany | Bradford County | 2,089 | 22 | $72k | $204k |
| 18834 | New Milford | Susquehanna County | 3,245 | 50 | $70k | $219k |
| 18837 | Rome | Bradford County | 2,936 | 34 | $71k | $188k |
| 18840 | Sayre | Bradford County | 10,968 | 266 | $59k | $171k |
| 18842 | South Gibson | Susquehanna County | 121 | 28 | $83k | $196k |
| 18843 | South Montrose | Susquehanna County | 345 | 247 | – | $208k |
| 18844 | Springville | Susquehanna County | 1,335 | 45 | $93k | $246k |
| 18845 | Stevensville | Bradford County | 489 | 45 | $58k | $204k |
| 18846 | Sugar Run | Bradford County | 770 | 33 | $86k | $271k |
| 18847 | Susquehanna | Susquehanna County | 5,104 | 39 | $57k | $156k |
| 18848 | Towanda | Bradford County | 8,199 | 74 | $60k | $175k |
| 18850 | Ulster | Bradford County | 2,070 | 33 | $72k | $175k |
| 18851 | Warren Center | Bradford County | 615 | 23 | $78k | $234k |
| 18853 | Wyalusing | Bradford County | 4,028 | 38 | $67k | $225k |
| 18854 | Wysox | Bradford County | 1,595 | 69 | $78k | $207k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.