| ZIP Codes: | 4 ZIP Codes (3 Standard, 0 PO Box, 1 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:41 PM |
| Population: | 5,349 [See All] |
| FIPS: | 46015 |
| Land Area: | 914 sq mi |
| Water Area: | 35 sq mi |
| Coordinates: | 43.8061, -99.1584 |
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5,349 residents live across 4 ZIPs covering 914 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 5,141 to 5,349 from 2014 to 2024 — a +4.0% change. 2 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 57325 (Chamberlain, $80,139 median) and poorest ZIP 57370 (Pukwana, $58,824) are 7.6 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.6× across this county — from $144,200 in 57355 (Kimball) to $230,300 in 57325 (Chamberlain).
Density varies 4× across the county — from 3 people/sq mi in 57355 (Kimball) to 11 in 57325 (Chamberlain).
Educational attainment ranges from 18.0% bachelor's+ in 57370 (Pukwana) to 33.8% in 57325 (Chamberlain) — the breadth of educational profiles across the area.
Within South Dakota, this is the #36 most populous of 82 counties and ranks #61 for median household income .
Hosts 1 single-entity Unique ZIP: 57326St Joseph Indian School .
Weighted by population, the typical household earns about $73,014 across the county — reflecting what a typical resident sees, not a simple ZIP average.
28.3% of adults age 25+ hold a bachelor's degree or higher (1,018 of 3,596 reporting).
3 Standard delivery, 0 PO Box only, 1 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.