Buffalo Oklahoma ZIP Codes
Buffalo holds a single ZIP code.
Every ZIP code in Buffalo
| ZIP code | County |
|---|---|
| 73834 | Harper 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Buffalo codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Buffalo. 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 Buffalo ZIP code begins 738. Those first three digits identify the sectional center facility that processes mail for this part of Oklahoma. Statewide that range covers 20 ZIP codes, so Buffalo accounts for 5% of it.
Every Oklahoma ZIP prefix and the region it covers →
Area codes covering Buffalo
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 Buffalo occupies.
Buffalo Oklahoma area codes in full →
Where Buffalo's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Buffalo
| City | Distance | ZIP codes |
|---|---|---|
| May Oklahoma ZIP codes | 16 mi | 1 ZIP code |
| Rosston Oklahoma ZIP codes | 16 mi | 1 ZIP code |
| Laverne Oklahoma ZIP codes | 17 mi | 1 ZIP code |
| Fort Supply Oklahoma ZIP codes | 18 mi | 1 ZIP code |
| Gate Oklahoma ZIP codes | 23 mi | 1 ZIP code |
| Freedom Oklahoma ZIP codes | 29 mi | 1 ZIP code |
| Woodward Oklahoma ZIP codes | 31 mi | 2 ZIP codes |
| Fargo Oklahoma ZIP codes | 32 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.