ZIP Code 99610

99610 is one of Alaska's ZIP codes, delivering to addresses in Kasilof, Kenai Peninsula Borough.

City: Kasilof
Borough or census area: Kenai Peninsula Borough
State: Alaska
Prefix: 996xx

Where this code sits

99610 is part of the 996xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Kasilof.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99610 delivers to without sharing its boundary.

907 Area code 907

ZIP codes nearest 99610

The ZIP codes whose reference points sit closest to 99610.
ZIP code	Distance	Delivers to
ZIP code 99568	6.9 mi	Clam Gulch, AK
ZIP code 99669	13 mi	Soldotna, AK
ZIP code 99672	20 mi	Sterling, AK
ZIP code 99611	21 mi	Kenai, AK
ZIP code 99639	24 mi	Ninilchik, AK
ZIP code 99635	27 mi	Nikiski, AK
ZIP code 99556	36 mi	Anchor Point, AK
ZIP code 99603	54 mi	Homer, 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 99610, plotted from its record coordinates.

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

Scope ZIP code 99610. 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.