Nashua Iowa ZIP Codes

Nashua holds a single ZIP code.

Every ZIP code in Nashua

The complete list of Nashua, Iowa ZIP codes with the county each falls in.
ZIP code	County
50658	Chickasaw 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Nashua codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Nashua. 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 Nashua ZIP code begins 506. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 70 ZIP codes, so Nashua accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Nashua

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

Nashua Iowa area codes in full →

Where Nashua's ZIP codes sit

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

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

Cities near Nashua

The closest places to Nashua with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Ionia Iowa ZIP codes	7.3 mi	1 ZIP code
Plainfield Iowa ZIP codes	7.3 mi	1 ZIP code
Charles City Iowa ZIP codes	10 mi	1 ZIP code
Frederika Iowa ZIP codes	13 mi	1 ZIP code
North Washington Iowa ZIP codes	13 mi	1 ZIP code
Clarksville Iowa ZIP codes	13 mi	1 ZIP code
New Hampton Iowa ZIP codes	14 mi	1 ZIP code
Greene Iowa ZIP codes	14 mi	1 ZIP code

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