Agar South Dakota ZIP Codes
Agar holds a single ZIP code.
Every ZIP code in Agar
| ZIP code | County |
|---|---|
| 57520 | Sully 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Agar codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Agar. 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 Agar ZIP code begins 575. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 43 ZIP codes, so Agar accounts for 2% of it.
Every South Dakota ZIP prefix and the region it covers →
Area codes covering Agar
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 Agar occupies.
Agar South Dakota area codes in full →
Where Agar's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Agar
| City | Distance | ZIP codes |
|---|---|---|
| Onida South Dakota ZIP codes | 9.3 mi | 1 ZIP code |
| Gettysburg South Dakota ZIP codes | 13 mi | 1 ZIP code |
| Lebanon South Dakota ZIP codes | 22 mi | 1 ZIP code |
| Blunt South Dakota ZIP codes | 23 mi | 1 ZIP code |
| Harrold South Dakota ZIP codes | 27 mi | 1 ZIP code |
| Hoven South Dakota ZIP codes | 31 mi | 1 ZIP code |
| Seneca South Dakota ZIP codes | 32 mi | 1 ZIP code |
| Tolstoy South Dakota ZIP codes | 34 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.