McPherson County, South Dakota ZIP codes
4 ZIP codes are in McPherson County, plus 4 that cross in from neighboring counties.
- ZIP codes
- 4
- Population in these ZIPs
- 2,256
- Avg. median income
- $64,600population-weighted
- Cities & towns
- 4
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ZIP codes in McPherson County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 57437 | Eureka | 1,074 | $49,276 | $86,700 |
| 57448 | Hosmer | 404 | $66,538 | $64,300 |
| 57456 | Leola | 670 | $75,833 | $75,400 |
| 57457 | Long Lake | 108 | $140,417 | — |
ZIP codes partly in McPherson County
These ZIP codes are mostly in a neighboring county but cover part of McPherson County.
| ZIP code | City | State | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|---|
| 57471 | Roscoe | SD | Edmunds County | 546 | $67,500 | $78,700 |
| 57481 | Westport | SD | Brown County | 271 | $68,125 | $215,600 |
| 58413 | Ashley | ND | McIntosh County | 966 | $51,250 | $77,900 |
| 58439 | Forbes | ND | Dickey County | 385 | $73,611 | — |
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 McPherson County
Nearby counties
Frequently asked questions
How many ZIP codes are in McPherson County, South Dakota?
4 ZIP codes are mainly in McPherson County, and 4 more ZIP codes from neighboring areas reach partly into it.
What cities are in McPherson County?
ZIP codes in McPherson County use the city names Eureka, Hosmer, Leola and Long Lake.