Colton Washington ZIP Codes
Colton holds a single ZIP code.
Every ZIP code in Colton
| ZIP code | County |
|---|---|
| 99113 | Whitman 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Colton codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Colton. 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 Colton ZIP code begins 991. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 67 ZIP codes, so Colton accounts for 1% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Colton
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 Colton occupies.
Colton Washington area codes in full →
Where Colton's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Colton
| City | Distance | ZIP codes |
|---|---|---|
| Uniontown Washington ZIP codes | 2.8 mi | 1 ZIP code |
| Clarkston Washington ZIP codes | 11 mi | 1 ZIP code |
| Pullman Washington ZIP codes | 12 mi | 2 ZIP codes |
| Albion Washington ZIP codes | 17 mi | 1 ZIP code |
| Asotin Washington ZIP codes | 17 mi | 1 ZIP code |
| Pomeroy Washington ZIP codes | 23 mi | 1 ZIP code |
| Palouse Washington ZIP codes | 24 mi | 1 ZIP code |
| Colfax Washington ZIP codes | 26 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.