Sunnyside Washington ZIP Codes
Sunnyside holds a single ZIP code.
Every ZIP code in Sunnyside
| ZIP code | County |
|---|---|
| 98944 | Yakima County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Sunnyside codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Sunnyside. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Sunnyside ZIP code begins 989. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 34 ZIP codes, so Sunnyside accounts for 3% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Sunnyside
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Sunnyside occupies.
Sunnyside Washington area codes in full →
Where Sunnyside's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Sunnyside
| City | Distance | ZIP codes |
|---|---|---|
| Grandview Washington ZIP codes | 6.8 mi | 1 ZIP code |
| Mabton Washington ZIP codes | 7.2 mi | 1 ZIP code |
| Granger Washington ZIP codes | 9.1 mi | 1 ZIP code |
| Prosser Washington ZIP codes | 14 mi | 1 ZIP code |
| Zillah Washington ZIP codes | 14 mi | 1 ZIP code |
| Toppenish Washington ZIP codes | 15 mi | 1 ZIP code |
| Wapato Washington ZIP codes | 22 mi | 1 ZIP code |
| Moxee Washington ZIP codes | 25 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.