ZIP Code 83450

83450 is one of Idaho's ZIP codes, delivering to addresses in Terreton, Jefferson County.

City: Terreton
County: Jefferson County
State: Idaho
Prefix: 834xx

Where this code sits

83450 is part of the 834xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Terreton.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 83450 delivers to without sharing its boundary.

ZIP codes nearest 83450

The ZIP codes whose reference points sit closest to 83450.
ZIP code	Distance	Delivers to
ZIP code 83435	12 mi	Monteview, ID
ZIP code 83425	13 mi	Hamer, ID
ZIP code 83444	18 mi	Roberts, ID
ZIP code 83423	23 mi	Dubois, ID
ZIP code 83434	24 mi	Menan, ID
ZIP code 83431	24 mi	Lewisville, ID
ZIP code 83442	29 mi	Rigby, ID
ZIP code 83454	30 mi	Ucon, 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 83450, plotted from its record coordinates.

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

Scope ZIP code 83450. 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.