Webster South Dakota ZIP Codes
Webster holds a single ZIP code.
Every ZIP code in Webster
| ZIP code | County |
|---|---|
| 57274 | Day 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Webster codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Webster. 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 Webster ZIP code begins 572. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 56 ZIP codes, so Webster accounts for 2% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Webster
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 Webster occupies.
Webster South Dakota area codes in full →
Where Webster's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Webster
| City | Distance | ZIP codes |
|---|---|---|
| Waubay South Dakota ZIP codes | 11 mi | 1 ZIP code |
| Bristol South Dakota ZIP codes | 11 mi | 1 ZIP code |
| Grenville South Dakota ZIP codes | 11 mi | 1 ZIP code |
| Roslyn South Dakota ZIP codes | 11 mi | 1 ZIP code |
| Ortley South Dakota ZIP codes | 15 mi | 1 ZIP code |
| Wallace South Dakota ZIP codes | 18 mi | 1 ZIP code |
| Bradley South Dakota ZIP codes | 18 mi | 1 ZIP code |
| Pierpont South Dakota ZIP codes | 19 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.