Newcastle Oklahoma ZIP Codes
Newcastle holds a single ZIP code.
Every ZIP code in Newcastle
| ZIP code | County |
|---|---|
| 73065 | McClain 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Newcastle codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Newcastle. 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 Newcastle ZIP code begins 730. Those first three digits identify the sectional center facility that processes mail for this part of Oklahoma. Statewide that range covers 89 ZIP codes, so Newcastle accounts for 1% of it.
Every Oklahoma ZIP prefix and the region it covers →
Area codes covering Newcastle
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Newcastle occupies.
Newcastle Oklahoma area codes in full →
Where Newcastle's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Newcastle
| City | Distance | ZIP codes |
|---|---|---|
| Blanchard Oklahoma ZIP codes | 7.4 mi | 1 ZIP code |
| Tuttle Oklahoma ZIP codes | 10 mi | 1 ZIP code |
| Mustang Oklahoma ZIP codes | 13 mi | 1 ZIP code |
| Norman Oklahoma ZIP codes | 14 mi | 6 ZIP codes |
| Washington Oklahoma ZIP codes | 14 mi | 1 ZIP code |
| Noble Oklahoma ZIP codes | 15 mi | 1 ZIP code |
| Dibble Oklahoma ZIP codes | 16 mi | 1 ZIP code |
| Oklahoma City Oklahoma ZIP codes | 16 mi | 76 ZIP codes |
Straight-line distance between place reference points, not driving distance.