ZIP Code 51433

51433 is one of Iowa's ZIP codes, delivering to addresses in Auburn, Sac County.

City: Auburn
County: Sac County
State: Iowa
Prefix: 514xx

Where this code sits

51433 is part of the 514xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Auburn.

Auburn Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51433 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51433

The ZIP codes whose reference points sit closest to 51433.
ZIP code	Distance	Delivers to
ZIP code 51449	6.4 mi	Lake City, IA
ZIP code 51450	9.5 mi	Lake View, IA
ZIP code 51436	9.6 mi	Breda, IA
ZIP code 50561	10 mi	Lytton, IA
ZIP code 51466	11 mi	Wall Lake, IA
ZIP code 51451	11 mi	Lanesboro, IA
ZIP code 51452	12 mi	Lidderdale, IA
ZIP code 50583	12 mi	Sac City, IA

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 51433, plotted from its record coordinates.

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

Scope ZIP code 51433. 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.