| ZIP Codes: | 2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 507 / 605 / 924 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:13:44 PM |
| Population: | 2,929 [See All] |
| FIPS: | 46117 |
| CBSA: | Pierre, SD |
| Land Area: | 1,640 sq mi |
| Water Area: | 78 sq mi |
| Coordinates: | 44.5159, -100.9558 |
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2,929 residents live across 2 ZIPs covering 1,640 sq mi, served by 2 distinct USPS-recognized cities.
Population moved from 2,965 to 2,929 from 2014 to 2024 — a -1.2% change. 1 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 57532 (Fort Pierre, $87,966 median) and poorest ZIP 57532 (Fort Pierre, $87,966) are 0.0 miles apart — a 1.0× income gap across local geography.
Within South Dakota, this is the #46 most populous of 82 counties and ranks #14 for median household income .
Weighted by population, the typical household earns about $87,966 across the county — reflecting what a typical resident sees, not a simple ZIP average.
29.1% of adults age 25+ hold a bachelor's degree or higher (614 of 2,109 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.