| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 605 / 701 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 11:14:57 PM |
| Population: | 1,266 [See All] |
| FIPS: | 46105 |
| Land Area: | 2,850 sq mi |
| Water Area: | 20 sq mi |
| Coordinates: | 45.5385, -102.5084 |
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3,118 residents live across 5 ZIPs covering 2,850 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 3,148 to 3,118 from 2014 to 2024 — a -1.0% change. 3 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 57620 (Bison, $90,500 median) and poorest ZIP 57638 (Lemmon, $58,533) are 24.8 miles apart — a 1.5× income gap across local geography.
Median home values vary 2.3× across this county — from $101,100 in 57638 (Lemmon) to $229,300 in 57644 (Meadow).
Density varies 6× across the county — from 0 people/sq mi in 57649 (Prairie City) to 3 in 57638 (Lemmon).
Educational attainment ranges from 10.6% bachelor's+ in 57649 (Prairie City) to 35.8% in 57644 (Meadow) — the breadth of educational profiles across the area.
Within South Dakota, this is the #65 most populous of 77 counties and ranks #1 for median household income with the #8 fastest decade growth .
On the national stage, Perkins County is ranks #78 for income .
Weighted by population, the typical household earns about $70,313 across the county — reflecting what a typical resident sees, not a simple ZIP average.
25.6% of adults age 25+ hold a bachelor's degree or higher (573 of 2,236 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.