ZIP Code 99657

99657 is one of Alaska's ZIP codes, delivering to addresses in Russian Mission, Kusilvak Census Area.

City: Russian Mission
Borough or census area: Kusilvak Census Area
State: Alaska
Prefix: 996xx

Where this code sits

99657 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Russian Mission.

Russian Mission Alaska ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99657 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99657

The ZIP codes whose reference points sit closest to 99657.
ZIP code	Distance	Delivers to
ZIP code 99585	30 mi	Marshall, AK
ZIP code 99626	38 mi	Lower Kalskag, AK
ZIP code 99607	39 mi	Kalskag, AK
ZIP code 99679	48 mi	Tuluksak, AK
ZIP code 99551	60 mi	Akiachak, AK
ZIP code 99552	60 mi	Akiak, AK
ZIP code 99621	67 mi	Kwethluk, AK
ZIP code 99559	69 mi	Bethel, 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 99657, plotted from its record coordinates.

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

Scope ZIP code 99657. 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.