Oacoma South Dakota ZIP Codes
Oacoma holds a single ZIP code.
Every ZIP code in Oacoma
| ZIP code | County |
|---|---|
| 57365 | Lyman 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Oacoma codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Oacoma. 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 Oacoma ZIP code begins 573. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 62 ZIP codes, so Oacoma accounts for 2% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Oacoma
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 Oacoma occupies.
Oacoma South Dakota area codes in full →
Where Oacoma's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Oacoma
| City | Distance | ZIP codes |
|---|---|---|
| Chamberlain South Dakota ZIP codes | 1.9 mi | 2 ZIP codes |
| Pukwana South Dakota ZIP codes | 9.2 mi | 1 ZIP code |
| Reliance South Dakota ZIP codes | 13 mi | 1 ZIP code |
| Kimball South Dakota ZIP codes | 21 mi | 1 ZIP code |
| Kennebec South Dakota ZIP codes | 26 mi | 1 ZIP code |
| White Lake South Dakota ZIP codes | 33 mi | 1 ZIP code |
| Presho South Dakota ZIP codes | 35 mi | 1 ZIP code |
| Winner South Dakota ZIP codes | 38 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.