ZIP Code 99664

99664 is one of Alaska's ZIP codes, delivering to addresses in Seward, Kenai Peninsula Borough.

City: Seward
Borough or census area: Kenai Peninsula Borough
State: Alaska
Prefix: 996xx

Where this code sits

99664 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Seward.

Seward Alaska ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99664 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99664

The ZIP codes whose reference points sit closest to 99664.
ZIP code	Distance	Delivers to
ZIP code 99572	28 mi	Cooper Landing, AK
ZIP code 99631	33 mi	Moose Pass, AK
ZIP code 99693	51 mi	Whittier, AK
ZIP code 99605	51 mi	Hope, AK
ZIP code 99587	58 mi	Girdwood, AK
ZIP code 99511	66 mi	Anchorage, AK
ZIP code 99519	68 mi	Anchorage, AK
ZIP code 99540	68 mi	Indian, AK

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 99664, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 99664. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.