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Duncombe Iowa ZIP Codes

Duncombe holds a single ZIP code.

Every ZIP code in Duncombe

The complete list of Duncombe, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
50532Webster 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Duncombe codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Duncombe. 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 Duncombe ZIP code begins 505. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 75 ZIP codes, so Duncombe accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Duncombe

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 Duncombe occupies.

Duncombe Iowa area codes in full →

Where Duncombe's ZIP codes sit

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

Cities near Duncombe

The closest places to Duncombe with their own ZIP code list, nearest first.
CityDistanceZIP codes
Lehigh Iowa ZIP codes8.2 mi1 ZIP code
Otho Iowa ZIP codes8.4 mi1 ZIP code
Vincent Iowa ZIP codes8.5 mi1 ZIP code
Webster City Iowa ZIP codes9.1 mi1 ZIP code
Webster Iowa ZIP codes9.1 mi1 ZIP code
Fort Dodge Iowa ZIP codes9.5 mi1 ZIP code
Woolstock Iowa ZIP codes10 mi1 ZIP code
Badger Iowa ZIP codes13 mi1 ZIP code

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