Royal City Washington ZIP Codes
Royal City holds a single ZIP code.
Every ZIP code in Royal City
| ZIP code | County |
|---|---|
| 99357 | Grant 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Royal City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Royal City. 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 Royal City ZIP code begins 993. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 36 ZIP codes, so Royal City accounts for 3% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Royal City
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 Royal City occupies.
Royal City Washington area codes in full →
Where Royal City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Royal City
| City | Distance | ZIP codes |
|---|---|---|
| George Washington ZIP codes | 17 mi | 1 ZIP code |
| Mattawa Washington ZIP codes | 18 mi | 1 ZIP code |
| Othello Washington ZIP codes | 22 mi | 1 ZIP code |
| Moses Lake Washington ZIP codes | 23 mi | 1 ZIP code |
| Quincy Washington ZIP codes | 26 mi | 1 ZIP code |
| Warden Washington ZIP codes | 27 mi | 1 ZIP code |
| Ephrata Washington ZIP codes | 29 mi | 1 ZIP code |
| Soap Lake Washington ZIP codes | 34 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.