ZIP Code 99609

99609 is one of Alaska's ZIP codes, delivering to addresses in Kasigluk, Bethel Census Area.

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

Where this code sits

99609 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Kasigluk.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99609 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99609

The ZIP codes whose reference points sit closest to 99609.
ZIP code	Distance	Delivers to
ZIP code 99641	2.0 mi	Nunapitchuk, AK
ZIP code 99634	24 mi	Napakiak, AK
ZIP code 99559	27 mi	Bethel, AK
ZIP code 99680	39 mi	Tuntutuliak, AK
ZIP code 99578	50 mi	Eek, AK
ZIP code 99545	66 mi	Kongiganak, AK
ZIP code 99585	72 mi	Marshall, AK
ZIP code 99650	74 mi	Pilot Station, 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 99609, plotted from its record coordinates.

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

Scope ZIP code 99609. 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.