Clarkston Washington ZIP Codes
Clarkston holds a single ZIP code.
Every ZIP code in Clarkston
| ZIP code | County |
|---|---|
| 99403 | Asotin 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Clarkston codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Clarkston. 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 Clarkston ZIP code begins 994. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 3 ZIP codes, so Clarkston accounts for 33% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Clarkston
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 Clarkston occupies.
Clarkston Washington area codes in full →
Where Clarkston's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Clarkston
| City | Distance | ZIP codes |
|---|---|---|
| Asotin Washington ZIP codes | 5.7 mi | 1 ZIP code |
| Uniontown Washington ZIP codes | 8.7 mi | 1 ZIP code |
| Colton Washington ZIP codes | 11 mi | 1 ZIP code |
| Pullman Washington ZIP codes | 23 mi | 2 ZIP codes |
| Pomeroy Washington ZIP codes | 26 mi | 1 ZIP code |
| Albion Washington ZIP codes | 28 mi | 1 ZIP code |
| Palouse Washington ZIP codes | 34 mi | 1 ZIP code |
| Colfax Washington ZIP codes | 37 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.