| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:42 PM |
| Population: | 3,147 [See All] |
| FIPS: | 46043 |
| Land Area: | 491 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 43.3757, -98.4166 |
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3,147 residents live across 5 ZIPs covering 491 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 3,228 to 3,147 from 2014 to 2024 — a -2.5% change. 1 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 57313 (Armour, $89,107 median) and poorest ZIP 57330 (Delmont, $71,563) are 13.4 miles apart — a 1.2× income gap across local geography.
Median home values vary 1.8× across this county — from $117,300 in 57313 (Armour) to $211,400 in 57328 (Corsica).
Density varies 1× across the county — from 5 people/sq mi in 57330 (Delmont) to 7 in 57328 (Corsica).
Educational attainment ranges from 20.3% bachelor's+ in 57328 (Corsica) to 40.8% in 57330 (Delmont) — the breadth of educational profiles across the area.
Within South Dakota, this is the #44 most populous of 82 counties and ranks #21 for median household income .
Weighted by population, the typical household earns about $84,868 across the county — reflecting what a typical resident sees, not a simple ZIP average.
27.3% of adults age 25+ hold a bachelor's degree or higher (571 of 2,091 reporting).
5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.