| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:13:43 PM |
| Population: | 2,723 [See All] |
| FIPS: | 46071 |
| Land Area: | 1,712 sq mi |
| Water Area: | 7 sq mi |
| Coordinates: | 43.6192, -101.5860 |
| Quick Link: |
2,723 residents live across 5 ZIPs covering 1,712 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 2,956 to 2,723 from 2014 to 2024 — a -7.9% change. 2 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 57547 (Long Valley, $78,523 median) and poorest ZIP 57577 (Wanblee, $20,625) are 15.8 miles apart — a 3.8× income gap across local geography.
Median home values vary 1.5× across this county — from $115,700 in 57547 (Long Valley) to $175,000 in 57750 (Interior).
Density varies 6× across the county — from 1 people/sq mi in 57521 (Belvidere) to 5 in 57577 (Wanblee).
Educational attainment ranges from 5.5% bachelor's+ in 57577 (Wanblee) to 25.1% in 57521 (Belvidere) — the breadth of educational profiles across the area.
Within South Dakota, this is the #47 most populous of 82 counties and ranks #79 for median household income .
Weighted by population, the typical household earns about $39,759 across the county — reflecting what a typical resident sees, not a simple ZIP average.
14.3% of adults age 25+ hold a bachelor's degree or higher (235 of 1,645 reporting).
5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.8× 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.
Jackson County lost 7.9% of residents between 2014 and 2024. ZIPs that shed the largest share: