| ZIP Codes: | 7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:41 PM |
| Population: | 4,211 [See All] |
| FIPS: | 46025 |
| Land Area: | 950 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 44.8356, -97.7257 |
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4,211 residents live across 7 ZIPs covering 950 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 3,969 to 4,211 from 2014 to 2024 — a +6.1% change. 5 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 57271 (Vienna, $85,524 median) and poorest ZIP 57258 (Raymond, $58,295) are 19.0 miles apart — a 1.5× income gap across local geography.
Median home values vary 4.9× across this county — from $63,000 in 57236 (Garden City) to $307,800 in 57271 (Vienna).
Educational attainment ranges from 3.6% bachelor's+ in 57271 (Vienna) to 32.3% in 57322 (Carpenter) — the breadth of educational profiles across the area.
Within South Dakota, this is the #38 most populous of 82 counties and ranks #51 for median household income with the #20 fastest decade growth .
Weighted by population, the typical household earns about $68,437 across the county — reflecting what a typical resident sees, not a simple ZIP average.
20.4% of adults age 25+ hold a bachelor's degree or higher (546 of 2,675 reporting).
7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 57225 | Clark | Standard | 1,833 | $66,875 | 300.7 | 11.1% |
| 57278 | Willow Lake | Standard | 1,011 | $70,208 | 167.7 | 6.0% |
| 57258 | Raymond | Standard | 510 | $58,295 | 119.9 | 47.8% |
| 57322 | Carpenter | Standard | 378 | $71,667 | 158.2 | 3.6% |
| 57271 | Vienna | Standard | 246 | $85,524 | 59.9 | -11.2% |
| 57217 | Bradley | Standard | 142 | $64,125 | 95.3 | -54.2% |
| 57236 | Garden City | Standard | 91 | $84,167 | 47.8 | 33.8% |