| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:00 PM |
| Population: | 7,126 [See All] |
| FIPS: | 46009 |
| Land Area: | 612 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 42.9771, -97.8634 |
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7,126 residents live across 5 ZIPs covering 612 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 7,351 to 7,126 from 2014 to 2024 — a -3.1% change. 2 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 57063 (Tabor, $92,500 median) and poorest ZIP 57066 (Tyndall, $56,389) are 8.7 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.8× across this county — from $112,000 in 57066 (Tyndall) to $204,900 in 57063 (Tabor).
Density varies 3× across the county — from 8 people/sq mi in 57315 (Avon) to 23 in 57062 (Springfield).
Educational attainment ranges from 12.2% bachelor's+ in 57062 (Springfield) to 28.0% in 57066 (Tyndall) — the breadth of educational profiles across the area.
Within South Dakota, this is the #26 most populous of 82 counties and ranks #58 for median household income .
Weighted by population, the typical household earns about $66,182 across the county — reflecting what a typical resident sees, not a simple ZIP average.
20.0% of adults age 25+ hold a bachelor's degree or higher (1,053 of 5,265 reporting).
5 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.