First three digits · Washington
ZIP Codes Starting with
46 ZIP codes start with 988, sorted at the Wenatchee, WA (SCF 988) sectional center (USPS labeling list L005, effective October 1, 2026) in Washington: 45 residential ZIP codes across 4 counties and 1 PO Box or single-organization code (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 988 mean?
The first digit, 9, is one of ten national areas (Alaska, California, Hawaii, Oregon, Washington, American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Micronesia, Palau and Armed Forces Pacific). The first three, 988, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 988 to the Wenatchee, WA (SCF 988) facility. The last two digits pick the delivery area. By residents, the largest town names among the 988 ZIP codes are Moses Lake, Wenatchee, East Wenatchee, Quincy, Ephrata and Omak.
988 is the only prefix the Wenatchee, WA (SCF 988) facility sorts.
Where are the 988 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 988
| County | ||||||
|---|---|---|---|---|---|---|
| 98801 | Wenatchee | Chelan County | 45,426 | 296 | $82k | $461k |
| 98802 | East Wenatchee | Douglas County | 33,539 | 186 | $88k | $450k |
| 98807 | Wenatchee | Chelan County | PO Box or unique | – | – | – |
| 98811 | Ardenvoir | Chelan County | 6 | 12 | – | – |
| 98812 | Brewster | Okanogan County | 4,834 | 25 | $59k | $355k |
| 98813 | Bridgeport | Douglas County | 2,826 | 28 | $50k | $177k |
| 98814 | Carlton | Okanogan County | 473 | 3 | $99k | $583k |
| 98815 | Cashmere | Chelan County | 7,830 | 81 | $88k | $554k |
| 98816 | Chelan | Chelan County | 7,752 | 16 | $83k | $499k |
| 98817 | Chelan Falls | Chelan County | 233 | 252 | – | – |
| 98819 | Conconully | Okanogan County | 182 | 1 | $63k | $219k |
| 98821 | Dryden | Chelan County | 1,019 | 771 | $134k | – |
| 98822 | Entiat | Chelan County | 2,394 | 5 | $86k | $384k |
| 98823 | Ephrata | Grant County | 12,188 | 41 | $73k | $267k |
| 98824 | George | Grant County | 147 | 154 | $44k | $177k |
| 98826 | Leavenworth | Chelan County | 7,605 | 7 | $88k | $720k |
| 98827 | Loomis | Okanogan County | 289 | 1 | $43k | – |
| 98828 | Malaga | Chelan County | 1,898 | 31 | $70k | $438k |
| 98829 | Malott | Okanogan County | 361 | 5 | $37k | $392k |
| 98830 | Mansfield | Douglas County | 557 | 1 | $83k | $263k |
| 98831 | Manson | Chelan County | 3,953 | 84 | $83k | $660k |
| 98832 | Marlin | Grant County | 87 | 0 | $32k | $309k |
| 98833 | Mazama | Okanogan County | 245 | 0 | $118k | $610k |
| 98834 | Methow | Okanogan County | 178 | 2 | $72k | $590k |
| 98836 | Monitor | Chelan County | 429 | 60 | – | $380k |
| 98837 | Moses Lake | Grant County | 49,455 | 102 | $75k | $315k |
| 98840 | Okanogan | Okanogan County | 4,892 | 9 | $57k | $262k |
| 98841 | Omak | Okanogan County | 9,737 | 33 | $72k | $274k |
| 98843 | Orondo | Douglas County | 2,510 | 37 | $69k | $751k |
| 98844 | Oroville | Okanogan County | 4,873 | 15 | $44k | $294k |
| 98845 | Palisades | Douglas County | 115 | 2 | $56k | $300k |
| 98846 | Pateros | Okanogan County | 1,376 | 16 | $85k | $338k |
| 98847 | Peshastin | Chelan County | 1,641 | 9 | $69k | $380k |
| 98848 | Quincy | Grant County | 12,854 | 28 | $88k | $358k |
| 98849 | Riverside | Okanogan County | 1,096 | 6 | $64k | $277k |
| 98850 | Rock Island | Douglas County | 2,032 | 27 | $83k | $375k |
| 98851 | Soap Lake | Grant County | 4,437 | 30 | $63k | $243k |
| 98852 | Stehekin | Chelan County | 44 | 0 | $48k | $538k |
| 98853 | Stratford | Grant County | 6 | 0 | – | – |
| 98855 | Tonasket | Okanogan County | 5,857 | 9 | $60k | $258k |
| 98856 | Twisp | Okanogan County | 2,920 | 7 | $70k | $485k |
| 98857 | Warden | Grant County | 4,062 | 24 | $62k | $213k |
| 98858 | Waterville | Douglas County | 1,783 | 5 | $79k | $259k |
| 98859 | Wauconda | Okanogan County | 435 | 4 | $98k | – |
| 98860 | Wilson Creek | Grant County | 277 | 3 | $63k | $185k |
| 98862 | Winthrop | Okanogan County | 2,995 | 6 | $71k | $720k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.