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Defiance Iowa ZIP Codes

Defiance holds a single ZIP code.

Every ZIP code in Defiance

The complete list of Defiance, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
51527Shelby County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Defiance codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Defiance. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Defiance ZIP code begins 515. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 57 ZIP codes, so Defiance accounts for 2% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Defiance

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Defiance occupies.

Defiance Iowa area codes in full →

Where Defiance's ZIP codes sit

Each point is one Defiance ZIP code, plotted from its record coordinates.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Cities near Defiance

The closest places to Defiance with their own ZIP code list, nearest first.
CityDistanceZIP codes
Earling Iowa ZIP codes5.3 mi1 ZIP code
Manilla Iowa ZIP codes7.2 mi1 ZIP code
Irwin Iowa ZIP codes7.3 mi1 ZIP code
Kirkman Iowa ZIP codes7.7 mi1 ZIP code
Westphalia Iowa ZIP codes7.8 mi1 ZIP code
Panama Iowa ZIP codes9.8 mi1 ZIP code
Arion Iowa ZIP codes11 mi1 ZIP code
Dow City Iowa ZIP codes11 mi1 ZIP code

Straight-line distance between place reference points, not driving distance.