Johnston Iowa ZIP Codes
Johnston holds a single ZIP code.
Every ZIP code in Johnston
| ZIP code | County |
|---|---|
| 50131 | Polk 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Johnston codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Johnston. 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 Johnston ZIP code begins 501. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 69 ZIP codes, so Johnston accounts for 1% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Johnston
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 Johnston occupies.
Johnston Iowa area codes in full →
Where Johnston's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Johnston
| City | Distance | ZIP codes |
|---|---|---|
| Grimes Iowa ZIP codes | 4.1 mi | 1 ZIP code |
| Urbandale Iowa ZIP codes | 4.8 mi | 3 ZIP codes |
| Windsor Heights Iowa ZIP codes | 6.1 mi | 1 ZIP code |
| Polk City Iowa ZIP codes | 6.2 mi | 1 ZIP code |
| Granger Iowa ZIP codes | 6.5 mi | 1 ZIP code |
| Clive Iowa ZIP codes | 6.6 mi | 1 ZIP code |
| Ankeny Iowa ZIP codes | 6.9 mi | 2 ZIP codes |
| Des Moines Iowa ZIP codes | 10 mi | 57 ZIP codes |
Straight-line distance between place reference points, not driving distance.