Lyman County, South Dakota ZIP codes
6 ZIP codes are in Lyman County, plus 3 that cross in from neighboring counties.
- ZIP codes
- 6
- Population in these ZIPs
- 3,704
- Avg. median income
- $62,900population-weighted
- Cities & towns
- 6
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ZIP codes in Lyman County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 57365 | Oacoma | 599 | $76,000 | $218,400 |
| 57544 | Kennebec | 421 | $78,750 | $141,700 |
| 57548 | Lower Brule | 1,442 | $35,750 | $33,900 |
| 57568 | Presho | 540 | $83,188 | $174,800 |
| 57569 | Reliance | 497 | $74,722 | $124,200 |
| 57576 | Vivian | 205 | $100,208 | $219,600 |
ZIP codes partly in Lyman County
These ZIP codes are mostly in a neighboring county but cover part of Lyman County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 57532 | Fort Pierre | Stanley County | 2,929 | $87,966 | $299,100 |
| 57533 | Gregory | Gregory County | 1,674 | $58,500 | $122,400 |
| 57534 | Hamill | Tripp County | 130 | $33,438 | $113,500 |
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 Lyman County
Nearby counties
Frequently asked questions
How many ZIP codes are in Lyman County, South Dakota?
6 ZIP codes are mainly in Lyman County, and 3 more ZIP codes from neighboring areas reach partly into it.
What cities are in Lyman County?
ZIP codes in Lyman County use the city names Kennebec, Lower Brule, Oacoma, Presho, Reliance and Vivian.