Steilacoom Washington ZIP Codes
Steilacoom holds a single ZIP code.
Every ZIP code in Steilacoom
| ZIP code | County |
|---|---|
| 98388 | Pierce 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Steilacoom codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Steilacoom. 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 Steilacoom ZIP code begins 983. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 81 ZIP codes, so Steilacoom accounts for 1% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Steilacoom
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 Steilacoom occupies.
Steilacoom Washington area codes in full →
Where Steilacoom's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Steilacoom
| City | Distance | ZIP codes |
|---|---|---|
| Lakewood Washington ZIP codes | 3.0 mi | 5 ZIP codes |
| University Place Washington ZIP codes | 3.8 mi | 1 ZIP code |
| Dupont Washington ZIP codes | 5.0 mi | 1 ZIP code |
| Tacoma Washington ZIP codes | 8.5 mi | 35 ZIP codes |
| Gig Harbor Washington ZIP codes | 12 mi | 3 ZIP codes |
| Roy Washington ZIP codes | 13 mi | 1 ZIP code |
| Lacey Washington ZIP codes | 13 mi | 2 ZIP codes |
| Milton Washington ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.