Seward Alaska ZIP Codes
Seward holds a single ZIP code.
Every ZIP code in Seward
| ZIP code | Borough or census area |
|---|---|
| 99664 | Kenai Peninsula Borough |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Seward codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Seward. 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 Seward ZIP code begins 996. Those first three digits identify the sectional center facility that processes mail for this part of Alaska. Statewide that range covers 89 ZIP codes, so Seward accounts for 1% of it.
Every Alaska ZIP prefix and the region it covers →
Area codes covering Seward
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 Seward occupies.
Seward Alaska area codes in full →
Where Seward's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Seward
| City | Distance | ZIP codes |
|---|---|---|
| Whittier Alaska ZIP codes | 52 mi | 1 ZIP code |
| Soldotna Alaska ZIP codes | 63 mi | 1 ZIP code |
| Kenai Alaska ZIP codes | 69 mi | 1 ZIP code |
| Anchorage Alaska ZIP codes | 73 mi | 25 ZIP codes |
| Homer Alaska ZIP codes | 81 mi | 1 ZIP code |
| Seldovia Alaska ZIP codes | 89 mi | 1 ZIP code |
| Wasilla Alaska ZIP codes | 101 mi | 4 ZIP codes |
| Palmer Alaska ZIP codes | 102 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.