| ZIP Codes: | 3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:03 PM |
| Population: | 1,782 [See All] |
| FIPS: | 46095 |
| Land Area: | 1,142 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 43.5055, -100.8275 |
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1,782 residents live across 3 ZIPs covering 1,142 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 2,071 to 1,782 from 2014 to 2024 — a -14.0% change. 0 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 57579 (White River, $56,474 median) and poorest ZIP 57579 (White River, $56,474) are 0.0 miles apart — a 1.0× income gap across local geography.
Median home values vary 6.6× across this county — from $61,000 in 57579 (White River) to $402,300 in 57585 (Wood).
Educational attainment ranges from 12.5% bachelor's+ in 57560 (Norris) to 20.0% in 57585 (Wood) — the breadth of educational profiles across the area.
Within South Dakota, this is the #60 most populous of 82 counties and ranks #75 for median household income .
Weighted by population, the typical household earns about $56,474 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.6% of adults age 25+ hold a bachelor's degree or higher (198 of 1,193 reporting).
3 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.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Mellette County lost 14.0% of residents between 2014 and 2024.