| ZIP Codes: | 2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:13:44 PM |
| Population: | 1,136 [See All] |
| FIPS: | 46137 |
| Land Area: | 1,296 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 44.8426, -101.7766 |
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1,136 residents live across 2 ZIPs covering 1,296 sq mi, served by 2 distinct USPS-recognized cities.
Population moved from 1,359 to 1,136 from 2014 to 2024 — a -16.4% change. 0 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 57623 (Dupree, $59,946 median) and poorest ZIP 57623 (Dupree, $59,946) are 0.0 miles apart — a 1.0× income gap across local geography.
Density varies 1× across the county — from 1 people/sq mi in 57623 (Dupree) to 1 in 57622 (Cherry Creek).
Educational attainment ranges from 9.4% bachelor's+ in 57622 (Cherry Creek) to 19.8% in 57623 (Dupree) — the breadth of educational profiles across the area.
Within South Dakota, this is the #72 most populous of 82 counties and ranks #72 for median household income .
Weighted by population, the typical household earns about $59,946 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.8% of adults age 25+ hold a bachelor's degree or higher (127 of 715 reporting).
2 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.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Ziebach County lost 16.4% of residents between 2014 and 2024. ZIPs that shed the largest share: