ZIP Code 83440

83440 is one of Idaho's ZIP codes, delivering to addresses in Rexburg, Madison County.

City: Rexburg
County: Madison County
State: Idaho
Prefix: 834xx

Where this code sits

83440 is part of the 834xx range, the group of codes handled by one mail processing centre. Rexburg is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Rexburg page.

Rexburg Idaho ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83440 delivers to without sharing its boundary.

ZIP codes nearest 83440

The ZIP codes whose reference points sit closest to 83440.
ZIP code	Distance	Delivers to
ZIP code 83460	1.1 mi	Rexburg, ID
ZIP code 83441	5.4 mi	Rexburg, ID
ZIP code 83448	5.4 mi	Sugar City, ID
ZIP code 83451	8.9 mi	Teton, ID
ZIP code 83438	10 mi	Parker, ID
ZIP code 83436	11 mi	Newdale, ID
ZIP code 83442	11 mi	Rigby, ID
ZIP code 83434	11 mi	Menan, 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 83440, plotted from its record coordinates.

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

Scope ZIP code 83440. 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.