ZIP Code 83423

83423 is one of Idaho's ZIP codes, delivering to addresses in Dubois, Clark County.

City: Dubois
County: Clark County
State: Idaho
Prefix: 834xx

Where this code sits

83423 is part of the 834xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Dubois.

Dubois Idaho ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83423 delivers to without sharing its boundary.

ZIP codes nearest 83423

The ZIP codes whose reference points sit closest to 83423.
ZIP code	Distance	Delivers to
ZIP code 83446	14 mi	Spencer, ID
ZIP code 83435	19 mi	Monteview, ID
ZIP code 83425	19 mi	Hamer, ID
ZIP code 83450	23 mi	Terreton, ID
ZIP code 83438	32 mi	Parker, ID
ZIP code 59739	34 mi	Lima, MT
ZIP code 83444	34 mi	Roberts, ID
ZIP code 83445	35 mi	Saint Anthony, 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 83423, plotted from its record coordinates.

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

Scope ZIP code 83423. 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.