ZIP Code 83427

83427 is one of Idaho's ZIP codes, delivering to addresses in Iona, Bonneville County.

City: Iona
County: Bonneville County
State: Idaho
Prefix: 834xx

Where this code sits

83427 is part of the 834xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Iona.

Iona Idaho ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83427 delivers to without sharing its boundary.

ZIP codes nearest 83427

The ZIP codes whose reference points sit closest to 83427.
ZIP code	Distance	Delivers to
ZIP code 83401	2.7 mi	Idaho Falls, ID
ZIP code 83406	4.0 mi	Idaho Falls, ID
ZIP code 83454	4.8 mi	Ucon, ID
ZIP code 83404	5.3 mi	Idaho Falls, ID
ZIP code 83403	6.5 mi	Idaho Falls, ID
ZIP code 83405	6.5 mi	Idaho Falls, ID
ZIP code 83415	6.5 mi	Idaho Falls, ID
ZIP code 83402	6.7 mi	Idaho Falls, 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 83427, plotted from its record coordinates.

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

Scope ZIP code 83427. 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.