| ZIP Codes: | 5 ZIP Codes (4 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 11:55:01 PM |
| Population: | 8,756 [See All] |
| FIPS: | 46033 |
| CBSA: | Rapid City, SD |
| Land Area: | 1,480 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 43.6740, -103.3045 |
| Quick Link: |
8,756 residents live across 5 ZIPs covering 1,480 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 8,463 to 8,756 from 2014 to 2024 — a +3.5% change. 2 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 57744 (Hermosa, $106,250 median) and poorest ZIP 57738 (Fairburn, $52,308) are 12.0 miles apart — a 2.0× income gap across local geography.
Median home values vary 5.6× across this county — from $69,200 in 57722 (Buffalo Gap) to $386,800 in 57744 (Hermosa).
Density varies 18× across the county — from 1 people/sq mi in 57722 (Buffalo Gap) to 17 in 57773 (Pringle).
Educational attainment ranges from 1.2% bachelor's+ in 57738 (Fairburn) to 39.3% in 57744 (Hermosa) — the breadth of educational profiles across the area.
Within South Dakota, this is the #21 most populous of 82 counties and ranks #38 for median household income .
Weighted by population, the typical household earns about $88,122 across the county — reflecting what a typical resident sees, not a simple ZIP average.
33.3% of adults age 25+ hold a bachelor's degree or higher (2,342 of 7,028 reporting).
4 Standard delivery, 1 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.