| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:04 PM |
| Population: | 5,608 [See All] |
| FIPS: | 46123 |
| Land Area: | 1,731 sq mi |
| Water Area: | 14 sq mi |
| Coordinates: | 43.4373, -99.8894 |
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5,608 residents live across 5 ZIPs covering 1,731 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 5,379 to 5,608 from 2014 to 2024 — a +4.3% change. 5 ZIPs gained residents, 0 lost.
The county's wealthiest ZIP 57541 (Ideal, $250,001 median) and poorest ZIP 57534 (Hamill, $33,438) are 11.7 miles apart — a 7.5× income gap across local geography.
Median home values vary 6.1× across this county — from $95,000 in 57528 (Colome) to $577,600 in 57541 (Ideal).
Educational attainment ranges from 8.0% bachelor's+ in 57584 (Witten) to 42.9% in 57541 (Ideal) — the breadth of educational profiles across the area.
Within South Dakota, this is the #33 most populous of 82 counties and ranks #13 for median household income .
Weighted by population, the typical household earns about $64,370 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.7% of adults age 25+ hold a bachelor's degree or higher (698 of 3,942 reporting).
5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 7.5× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
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.