ZIP Code 99658

99658 is one of Alaska's ZIP codes, delivering to addresses in Saint Marys, Kusilvak Census Area.

City: Saint Marys
Borough or census area: Kusilvak Census Area
State: Alaska
Prefix: 996xx

Where this code sits

99658 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Saint Marys.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99658 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99658

The ZIP codes whose reference points sit closest to 99658.
ZIP code	Distance	Delivers to
ZIP code 99632	14 mi	Mountain Village, AK
ZIP code 99650	17 mi	Pilot Station, AK
ZIP code 99585	34 mi	Marshall, AK
ZIP code 99666	59 mi	Nunam Iqua, AK
ZIP code 99554	60 mi	Alakanuk, AK
ZIP code 99581	62 mi	Emmonak, AK
ZIP code 99620	64 mi	Kotlik, AK
ZIP code 99609	88 mi	Kasigluk, 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 99658, plotted from its record coordinates.

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

Scope ZIP code 99658. 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.