Mound City South Dakota ZIP Codes
Mound City holds a single ZIP code.
Every ZIP code in Mound City
| ZIP code | County |
|---|---|
| 57646 | Campbell 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Mound City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Mound City. 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 Mound City ZIP code begins 576. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 32 ZIP codes, so Mound City accounts for 3% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Mound City
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 Mound City occupies.
Mound City South Dakota area codes in full →
Where Mound City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Mound City
| City | Distance | ZIP codes |
|---|---|---|
| Herreid South Dakota ZIP codes | 7.7 mi | 1 ZIP code |
| Selby South Dakota ZIP codes | 15 mi | 1 ZIP code |
| Pollock South Dakota ZIP codes | 16 mi | 1 ZIP code |
| Glenham South Dakota ZIP codes | 17 mi | 1 ZIP code |
| Java South Dakota ZIP codes | 18 mi | 1 ZIP code |
| Eureka South Dakota ZIP codes | 22 mi | 1 ZIP code |
| Mobridge South Dakota ZIP codes | 22 mi | 1 ZIP code |
| Akaska South Dakota ZIP codes | 27 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.