Onaka South Dakota ZIP Codes
Onaka holds a single ZIP code.
Every ZIP code in Onaka
| ZIP code | County |
|---|---|
| 57466 | Faulk 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Onaka codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Onaka. 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 Onaka ZIP code begins 574. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 50 ZIP codes, so Onaka accounts for 2% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Onaka
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 Onaka occupies.
Onaka South Dakota area codes in full →
Where Onaka's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Onaka
| City | Distance | ZIP codes |
|---|---|---|
| Tolstoy South Dakota ZIP codes | 7.4 mi | 1 ZIP code |
| Seneca South Dakota ZIP codes | 9.3 mi | 1 ZIP code |
| Hoven South Dakota ZIP codes | 16 mi | 1 ZIP code |
| Lebanon South Dakota ZIP codes | 17 mi | 1 ZIP code |
| Roscoe South Dakota ZIP codes | 19 mi | 1 ZIP code |
| Faulkton South Dakota ZIP codes | 20 mi | 1 ZIP code |
| Bowdle South Dakota ZIP codes | 20 mi | 1 ZIP code |
| Cresbard South Dakota ZIP codes | 25 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.