Delmont South Dakota ZIP Codes
Delmont holds a single ZIP code.
Every ZIP code in Delmont
| ZIP code | County |
|---|---|
| 57330 | Douglas 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Delmont codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Delmont. 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 Delmont 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 Delmont accounts for 2% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Delmont
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 Delmont occupies.
Delmont South Dakota area codes in full →
Where Delmont's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Delmont
| City | Distance | ZIP codes |
|---|---|---|
| Armour South Dakota ZIP codes | 10 mi | 1 ZIP code |
| Tripp South Dakota ZIP codes | 10 mi | 1 ZIP code |
| Parkston South Dakota ZIP codes | 12 mi | 1 ZIP code |
| Wagner South Dakota ZIP codes | 15 mi | 1 ZIP code |
| Dante South Dakota ZIP codes | 16 mi | 1 ZIP code |
| Corsica South Dakota ZIP codes | 17 mi | 1 ZIP code |
| Dimock South Dakota ZIP codes | 17 mi | 1 ZIP code |
| Avon South Dakota ZIP codes | 19 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.