Allison Iowa ZIP Codes

Allison holds a single ZIP code.

Every ZIP code in Allison

The complete list of Allison, Iowa ZIP codes with the county each falls in.
ZIP code	County
50602	Butler 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Allison codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Allison. 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 Allison 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 Allison accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Allison

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 Allison occupies.

Allison Iowa area codes in full →

Where Allison's ZIP codes sit

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

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

Cities near Allison

The closest places to Allison with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Bristow Iowa ZIP codes	5.9 mi	1 ZIP code
Clarksville Iowa ZIP codes	6.7 mi	1 ZIP code
Dumont Iowa ZIP codes	9.0 mi	1 ZIP code
Greene Iowa ZIP codes	10 mi	1 ZIP code
Shell Rock Iowa ZIP codes	11 mi	1 ZIP code
Aredale Iowa ZIP codes	12 mi	1 ZIP code
Parkersburg Iowa ZIP codes	12 mi	1 ZIP code
Aplington Iowa ZIP codes	13 mi	1 ZIP code

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