ZIP Code 99637

99637 is one of Alaska's ZIP codes, delivering to addresses in Toksook Bay, Bethel Census Area.

City: Toksook Bay
Borough or census area: Bethel Census Area
State: Alaska
Prefix: 996xx

Where this code sits

99637 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Toksook Bay.

Toksook Bay Alaska ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99637 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99637

The ZIP codes whose reference points sit closest to 99637.
ZIP code	Distance	Delivers to
ZIP code 99681	6.3 mi	Tununak, AK
ZIP code 99690	14 mi	Nightmute, AK
ZIP code 99561	40 mi	Chefornak, AK
ZIP code 99630	42 mi	Mekoryuk, AK
ZIP code 99614	54 mi	Kipnuk, AK
ZIP code 99563	71 mi	Chevak, AK
ZIP code 99604	77 mi	Hooper Bay, AK
ZIP code 99662	92 mi	Scammon Bay, 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 99637, plotted from its record coordinates.

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

Scope ZIP code 99637. 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.