Charter Oak Iowa ZIP Codes
Charter Oak holds a single ZIP code.
Every ZIP code in Charter Oak
| ZIP code | County |
|---|---|
| 51439 | Crawford 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Charter Oak codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Charter Oak. 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 Charter Oak ZIP code begins 514. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 32 ZIP codes, so Charter Oak accounts for 3% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Charter Oak
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 Charter Oak occupies.
Charter Oak Iowa area codes in full →
Where Charter Oak's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Charter Oak
| City | Distance | ZIP codes |
|---|---|---|
| Ricketts Iowa ZIP codes | 4.2 mi | 1 ZIP code |
| Ute Iowa ZIP codes | 6.1 mi | 1 ZIP code |
| Schleswig Iowa ZIP codes | 10 mi | 1 ZIP code |
| Arion Iowa ZIP codes | 11 mi | 1 ZIP code |
| Dow City Iowa ZIP codes | 11 mi | 1 ZIP code |
| Soldier Iowa ZIP codes | 11 mi | 1 ZIP code |
| Mapleton Iowa ZIP codes | 12 mi | 1 ZIP code |
| Denison Iowa ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.