ZIP Code 99638

99638 is one of Alaska's ZIP codes, delivering to addresses in Nikolski, Aleutians West Census Area.

City: Nikolski
Borough or census area: Aleutians West Census Area
State: Alaska
Prefix: 996xx

Where this code sits

99638 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Nikolski.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99638 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99638

The ZIP codes whose reference points sit closest to 99638.
ZIP code	Distance	Delivers to
ZIP code 99692	116 mi	Dutch Harbor, AK
ZIP code 99685	117 mi	Unalaska, AK
ZIP code 99553	152 mi	Akutan, 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 99638, plotted from its record coordinates.

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

Scope ZIP code 99638. 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.