Alcester South Dakota ZIP Codes
Alcester holds a single ZIP code.
Every ZIP code in Alcester
| ZIP code | County |
|---|---|
| 57001 | Union 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Alcester codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Alcester. 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 Alcester ZIP code begins 570. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 69 ZIP codes, so Alcester accounts for 1% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Alcester
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 Alcester occupies.
Alcester South Dakota area codes in full →
Where Alcester's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Alcester
| City | Distance | ZIP codes |
|---|---|---|
| Beresford South Dakota ZIP codes | 8.5 mi | 1 ZIP code |
| Hudson South Dakota ZIP codes | 11 mi | 1 ZIP code |
| Fairview South Dakota ZIP codes | 15 mi | 1 ZIP code |
| Centerville South Dakota ZIP codes | 18 mi | 1 ZIP code |
| Canton South Dakota ZIP codes | 19 mi | 1 ZIP code |
| Worthing South Dakota ZIP codes | 22 mi | 1 ZIP code |
| Vermillion South Dakota ZIP codes | 23 mi | 1 ZIP code |
| Elk Point South Dakota ZIP codes | 24 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.