Sanborn County, South Dakota ZIP codes
3 ZIP codes are in Sanborn County, plus 5 that cross in from neighboring counties. It's part of the Mitchell, SD micro area.
- ZIP codes
- 3
- Population in these ZIPs
- 2,632
- Avg. median income
- $82,700population-weighted
- Cities & towns
- 3
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Sanborn County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 57314 | Artesian | 572 | $85,515 | $153,100 |
| 57359 | Letcher | 652 | $106,818 | $166,800 |
| 57385 | Woonsocket | 1,408 | $70,404 | $227,700 |
ZIP codes partly in Sanborn County
These ZIP codes are mostly in a neighboring county but cover part of Sanborn County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 57312 | Alpena | Beadle County | 596 | $91,688 | $137,500 |
| 57323 | Carthage | Miner County | 126 | $51,250 | $70,000 |
| 57337 | Fedora | Miner County | 130 | $75,197 | — |
| 57350 | Huron | Beadle County | 16,199 | $66,573 | $179,300 |
| 57363 | Mount Vernon | Davison County | 866 | $77,841 | $287,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Sanborn County
Nearby counties
Frequently asked questions
How many ZIP codes are in Sanborn County, South Dakota?
3 ZIP codes are mainly in Sanborn County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Sanborn County?
ZIP codes in Sanborn County use the city names Artesian, Letcher and Woonsocket.
What metro area is Sanborn County in?
Sanborn County is part of the Mitchell, SD micropolitan statistical area.