| ZIP Codes: | 8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:44 PM |
| Population: | 9,163 [See All] |
| FIPS: | 46125 |
| CBSA: | Sioux Falls, SD-MN |
| Land Area: | 663 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 43.3213, -97.1141 |
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9,163 residents live across 8 ZIPs covering 663 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 8,217 to 9,163 from 2014 to 2024 — a +11.5% change. 5 ZIPs gained residents, 2 lost (and 1 held flat).
The county's wealthiest ZIP 57015 (Chancellor, $110,250 median) and poorest ZIP 57047 (Monroe, $55,417) are 14.3 miles apart — a 2.0× income gap across local geography.
Median home values vary 4.7× across this county — from $68,300 in 57047 (Monroe) to $321,400 in 57015 (Chancellor).
Density varies 4× across the county — from 7 people/sq mi in 57036 (Hurley) to 30 in 57047 (Monroe).
Educational attainment ranges from 15.3% bachelor's+ in 57047 (Monroe) to 51.7% in 57021 (Davis) — the breadth of educational profiles across the area.
Within South Dakota, this is the #19 most populous of 82 counties and ranks #29 for median household income with the #12 fastest decade growth .
Weighted by population, the typical household earns about $78,803 across the county — reflecting what a typical resident sees, not a simple ZIP average.
27.9% of adults age 25+ hold a bachelor's degree or higher (1,726 of 6,177 reporting).
8 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 |
|---|---|---|---|---|---|---|
| 57053 | Parker | Standard | 2,220 | $93,393 | 144.2 | 16.6% |
| 57014 | Centerville | Standard | 1,667 | $77,000 | 136.9 | 17.1% |
| 57043 | Marion | Standard | 1,630 | $64,375 | 112.0 | 22.1% |
| 57070 | Viborg | Standard | 1,469 | $61,522 | 85.6 | -1.5% |
| 57015 | Chancellor | Standard | 802 | $110,250 | 48.7 | 0.0% |
| 57036 | Hurley | Standard | 667 | $85,000 | 96.8 | 1.2% |
| 57047 | Monroe | Standard | 389 | $55,417 | 12.8 | 68.4% |
| 57021 | Davis | Standard | 319 | $76,488 | 25.8 | -13.8% |