ZIP Code 83821

83821 is one of Idaho's ZIP codes, delivering to addresses in Coolin, Bonner County.

City: Coolin
County: Bonner County
State: Idaho
Prefix: 838xx

Where this code sits

83821 is part of the 838xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Coolin.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83821 delivers to without sharing its boundary.

ZIP codes nearest 83821

The ZIP codes whose reference points sit closest to 83821.
ZIP code	Distance	Delivers to
ZIP code 83848	9.1 mi	Nordman, ID
ZIP code 83865	15 mi	Colburn, ID
ZIP code 83864	20 mi	Sandpoint, ID
ZIP code 83852	21 mi	Ponderay, ID
ZIP code 83840	21 mi	Kootenai, ID
ZIP code 83825	22 mi	Dover, ID
ZIP code 99119	24 mi	Cusick, WA
ZIP code 83847	25 mi	Naples, ID

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 83821, plotted from its record coordinates.

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

Scope ZIP code 83821. 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.