| ZIP Codes: | 4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:42 PM |
| Population: | 2,954 [See All] |
| FIPS: | 46059 |
| Land Area: | 1,137 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 44.5701, -99.0726 |
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2,954 residents live across 4 ZIPs covering 1,137 sq mi, served by 4 distinct USPS-recognized cities.
Population moved from 3,041 to 2,954 from 2014 to 2024 — a -2.9% change. 2 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 57371 (Ree Heights, $74,196 median) and poorest ZIP 57373 (Saint Lawrence, $46,607) are 18.9 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.1× across this county — from $158,900 in 57362 (Miller) to $176,100 in 57373 (Saint Lawrence).
Density varies 4× across the county — from 1 people/sq mi in 57371 (Ree Heights) to 4 in 57362 (Miller).
Educational attainment ranges from 12.8% bachelor's+ in 57467 (Orient) to 32.8% in 57373 (Saint Lawrence) — the breadth of educational profiles across the area.
Within South Dakota, this is the #45 most populous of 82 counties and ranks #69 for median household income .
Weighted by population, the typical household earns about $64,193 across the county — reflecting what a typical resident sees, not a simple ZIP average.
27.8% of adults age 25+ hold a bachelor's degree or higher (544 of 1,958 reporting).
4 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.