ZIP Code 83853

83853 is one of Idaho's ZIP codes, delivering to addresses in Porthill, Boundary County.

City: Porthill
County: Boundary County
State: Idaho
Prefix: 838xx

Where this code sits

83853 is part of the 838xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Porthill.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83853 delivers to without sharing its boundary.

ZIP codes nearest 83853

The ZIP codes whose reference points sit closest to 83853.
ZIP code	Distance	Delivers to
ZIP code 83826	13 mi	Eastport, ID
ZIP code 83805	19 mi	Bonners Ferry, ID
ZIP code 83845	22 mi	Moyie Springs, ID
ZIP code 83847	28 mi	Naples, ID
ZIP code 83848	33 mi	Nordman, ID
ZIP code 83821	36 mi	Coolin, ID
ZIP code 83865	44 mi	Colburn, ID
ZIP code 59935	45 mi	Troy, MT

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 83853, plotted from its record coordinates.

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

Scope ZIP code 83853. 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.