Rock Rapids Iowa ZIP Codes
Rock Rapids holds a single ZIP code.
Every ZIP code in Rock Rapids
| ZIP code | County |
|---|---|
| 51246 | Lyon 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Rock Rapids codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Rock Rapids. 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 Rock Rapids ZIP code begins 512. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 20 ZIP codes, so Rock Rapids accounts for 5% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Rock Rapids
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 Rock Rapids occupies.
Rock Rapids Iowa area codes in full →
Where Rock Rapids's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Rock Rapids
| City | Distance | ZIP codes |
|---|---|---|
| Lester Iowa ZIP codes | 8.3 mi | 1 ZIP code |
| Alvord Iowa ZIP codes | 9.1 mi | 1 ZIP code |
| George Iowa ZIP codes | 10 mi | 1 ZIP code |
| Doon Iowa ZIP codes | 11 mi | 1 ZIP code |
| Larchwood Iowa ZIP codes | 14 mi | 1 ZIP code |
| Little Rock Iowa ZIP codes | 14 mi | 1 ZIP code |
| Inwood Iowa ZIP codes | 16 mi | 1 ZIP code |
| Hull Iowa ZIP codes | 17 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.