Washington Louisiana ZIP Codes
Washington holds a single ZIP code.
Every ZIP code in Washington
| ZIP code | Parish |
|---|---|
| 70589 | St. Landry Parish |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Washington codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Washington. 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 Washington ZIP code begins 705. Those first three digits identify the sectional center facility that processes mail for this part of Louisiana. Statewide that range covers 75 ZIP codes, so Washington accounts for 1% of it.
Every Louisiana ZIP prefix and the region it covers →
Area codes covering Washington
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 Washington occupies.
Washington Louisiana area codes in full →
Where Washington's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Washington
| City | Distance | ZIP codes |
|---|---|---|
| Opelousas Louisiana ZIP codes | 6.4 mi | 2 ZIP codes |
| Port Barre Louisiana ZIP codes | 7.4 mi | 1 ZIP code |
| Palmetto Louisiana ZIP codes | 11 mi | 1 ZIP code |
| Leonville Louisiana ZIP codes | 12 mi | 1 ZIP code |
| Grand Coteau Louisiana ZIP codes | 14 mi | 1 ZIP code |
| Ville Platte Louisiana ZIP codes | 14 mi | 1 ZIP code |
| Sunset Louisiana ZIP codes | 15 mi | 1 ZIP code |
| Chataignier Louisiana ZIP codes | 16 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.