Rockwell City Iowa ZIP Codes
Rockwell City holds a single ZIP code.
Every ZIP code in Rockwell City
| ZIP code | County |
|---|---|
| 50579 | Calhoun 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Rockwell City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Rockwell City. 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 Rockwell City 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 Rockwell City accounts for 1% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Rockwell City
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 Rockwell City occupies.
Rockwell City Iowa area codes in full →
Where Rockwell City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Rockwell City
| City | Distance | ZIP codes |
|---|---|---|
| Rockwell Iowa ZIP codes | 0.0 mi | 1 ZIP code |
| Jolley Iowa ZIP codes | 7.3 mi | 1 ZIP code |
| Knierim Iowa ZIP codes | 9.7 mi | 1 ZIP code |
| Lohrville Iowa ZIP codes | 9.9 mi | 1 ZIP code |
| Manson Iowa ZIP codes | 10 mi | 1 ZIP code |
| Somers Iowa ZIP codes | 10 mi | 1 ZIP code |
| Lake City Iowa ZIP codes | 10 mi | 1 ZIP code |
| Pomeroy Iowa ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.