Callender Iowa ZIP Codes
Callender holds a single ZIP code.
Every ZIP code in Callender
| ZIP code | County |
|---|---|
| 50523 | Webster 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Callender codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Callender. 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 Callender 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 Callender accounts for 1% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Callender
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 Callender occupies.
Callender Iowa area codes in full →
Where Callender's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Callender
| City | Distance | ZIP codes |
|---|---|---|
| Moorland Iowa ZIP codes | 5.5 mi | 1 ZIP code |
| Gowrie Iowa ZIP codes | 5.8 mi | 1 ZIP code |
| Somers Iowa ZIP codes | 7.0 mi | 1 ZIP code |
| Farnhamville Iowa ZIP codes | 8.2 mi | 1 ZIP code |
| Otho Iowa ZIP codes | 8.5 mi | 1 ZIP code |
| Harcourt Iowa ZIP codes | 9.3 mi | 1 ZIP code |
| Knierim Iowa ZIP codes | 11 mi | 1 ZIP code |
| Barnum Iowa ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.