ZIP Code 99623

99623 is one of Alaska's ZIP codes, delivering to addresses in Wasilla, Matanuska-Susitna Borough.

City: Wasilla
Borough or census area: Matanuska-Susitna Borough
State: Alaska
Prefix: 996xx

Where this code sits

99623 is part of the 996xx range, the group of codes handled by one mail processing centre. Wasilla is served by 4 ZIP codes in total; the full list, with the borough or census area each falls in, is on the Wasilla page.

Wasilla Alaska ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99623 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99623

The ZIP codes whose reference points sit closest to 99623.
ZIP code	Distance	Delivers to
ZIP code 99687	3.8 mi	Wasilla, AK
ZIP code 99629	5.5 mi	Wasilla, AK
ZIP code 99654	7.1 mi	Wasilla, AK
ZIP code 99694	9.5 mi	Houston, AK
ZIP code 99567	10 mi	Chugiak, AK
ZIP code 99652	12 mi	Big Lake, AK
ZIP code 99577	17 mi	Eagle River, AK
ZIP code 99504	24 mi	Anchorage, 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 99623, plotted from its record coordinates.

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

Scope ZIP code 99623. 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.