Little Sioux Iowa ZIP Codes
Little Sioux holds a single ZIP code.
Every ZIP code in Little Sioux
| ZIP code | County |
|---|---|
| 51545 | Harrison 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Little Sioux codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Little Sioux. 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 Little Sioux ZIP code begins 515. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 57 ZIP codes, so Little Sioux accounts for 2% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Little Sioux
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 Little Sioux occupies.
Little Sioux Iowa area codes in full →
Where Little Sioux's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Little Sioux
| City | Distance | ZIP codes |
|---|---|---|
| Pisgah Iowa ZIP codes | 5.4 mi | 1 ZIP code |
| Mondamin Iowa ZIP codes | 6.8 mi | 1 ZIP code |
| Blencoe Iowa ZIP codes | 8.9 mi | 1 ZIP code |
| Magnolia Iowa ZIP codes | 11 mi | 1 ZIP code |
| Moorhead Iowa ZIP codes | 12 mi | 1 ZIP code |
| Modale Iowa ZIP codes | 13 mi | 1 ZIP code |
| Onawa Iowa ZIP codes | 15 mi | 1 ZIP code |
| Logan Iowa ZIP codes | 17 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.