Palmer Iowa ZIP Codes

Palmer holds a single ZIP code.

Every ZIP code in Palmer

The complete list of Palmer, Iowa ZIP codes with the county each falls in.
ZIP code	County
50571	Pocahontas 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Palmer codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Palmer. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Palmer 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 Palmer accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Palmer

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 Palmer occupies.

712 Area code 712

Palmer Iowa area codes in full →

Where Palmer's ZIP codes sit

Each point is one Palmer ZIP code, plotted from its record coordinates.

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

Cities near Palmer

The closest places to Palmer with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Pomeroy Iowa ZIP codes	6.7 mi	1 ZIP code
Manson Iowa ZIP codes	7.6 mi	1 ZIP code
Pocahontas Iowa ZIP codes	8.1 mi	1 ZIP code
Gilmore City Iowa ZIP codes	11 mi	1 ZIP code
Jolley Iowa ZIP codes	12 mi	1 ZIP code
Fonda Iowa ZIP codes	13 mi	1 ZIP code
Rolfe Iowa ZIP codes	13 mi	1 ZIP code
Clare Iowa ZIP codes	13 mi	1 ZIP code

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