Le Mars Iowa ZIP Codes
Le Mars holds a single ZIP code.
Every ZIP code in Le Mars
| ZIP code | County |
|---|---|
| 51031 | Plymouth 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Le Mars codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Le Mars. 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 Le Mars ZIP code begins 510. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 55 ZIP codes, so Le Mars accounts for 2% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Le Mars
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 Le Mars occupies.
Le Mars Iowa area codes in full →
Where Le Mars's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Le Mars
| City | Distance | ZIP codes |
|---|---|---|
| Brunsville Iowa ZIP codes | 5.1 mi | 1 ZIP code |
| Merrill Iowa ZIP codes | 5.8 mi | 1 ZIP code |
| Oyens Iowa ZIP codes | 6.4 mi | 1 ZIP code |
| Remsen Iowa ZIP codes | 10 mi | 1 ZIP code |
| Hinton Iowa ZIP codes | 13 mi | 1 ZIP code |
| Maurice Iowa ZIP codes | 13 mi | 1 ZIP code |
| Ireton Iowa ZIP codes | 15 mi | 1 ZIP code |
| Orange City Iowa ZIP codes | 16 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.