Royal Slope zip code
Zip code in Royal Slope, WA
The location Royal Slope belongs to Adams County, state of Washington. Royal Slope has been assigned with the zip code 99344.
The location name Royal Slope is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Othello, the official name of the location. You can also use any of the following names: Hatton.
| Zip code | Type | Population |
|---|---|---|
| 99344 | STANDARD | 18,300 |
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