Underwood Iowa ZIP Codes
Underwood holds a single ZIP code.
Every ZIP code in Underwood
| ZIP code | County |
|---|---|
| 51576 | Pottawattamie 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Underwood codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Underwood. 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 Underwood 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 Underwood accounts for 2% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Underwood
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 Underwood occupies.
Underwood Iowa area codes in full →
Where Underwood's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Underwood
| City | Distance | ZIP codes |
|---|---|---|
| Neola Iowa ZIP codes | 5.9 mi | 1 ZIP code |
| Crescent Iowa ZIP codes | 9.2 mi | 1 ZIP code |
| Minden Iowa ZIP codes | 9.5 mi | 1 ZIP code |
| Treynor Iowa ZIP codes | 11 mi | 1 ZIP code |
| Council Bluffs Iowa ZIP codes | 13 mi | 3 ZIP codes |
| Carter Lake Iowa ZIP codes | 14 mi | 1 ZIP code |
| Shelby Iowa ZIP codes | 15 mi | 1 ZIP code |
| Persia Iowa ZIP codes | 15 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.