| ZIP Codes: | 4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:03 PM |
| Population: | 5,516 [See All] |
| FIPS: | 46101 |
| Land Area: | 390 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 44.0645, -96.3390 |
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5,941 residents live across 4 ZIPs covering 390 sq mi, served by 4 distinct USPS-recognized cities.
Population moved from 5,658 to 5,941 from 2014 to 2024 — a +5.0% change. 3 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 57024 (Egan, $98,333 median) and poorest ZIP 57065 (Trent, $70,000) are 6.1 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.6× across this county — from $172,700 in 57065 (Trent) to $283,500 in 57017 (Colman).
Educational attainment ranges from 9.0% bachelor's+ in 57065 (Trent) to 35.6% in 57024 (Egan) — the breadth of educational profiles across the area.
Within South Dakota, this is the #80 most populous of 93 counties and ranks #55 for median household income .
Weighted by population, the typical household earns about $81,161 across the county — reflecting what a typical resident sees, not a simple ZIP average.
30.9% of adults age 25+ hold a bachelor's degree or higher (1,206 of 3,902 reporting).
4 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.