| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 605 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:01 PM |
| Population: | 1,953 [See All] |
| FIPS: | 46049 |
| Land Area: | 1,055 sq mi |
| Water Area: | 23 sq mi |
| Coordinates: | 45.0637, -99.1927 |
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1,953 residents live across 5 ZIPs covering 1,055 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 2,246 to 1,953 from 2014 to 2024 — a -13.0% change. 3 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 57470 (Rockham, $108,281 median) and poorest ZIP 57473 (Seneca, $23,750) are 30.6 miles apart — a 4.6× income gap across local geography.
Median home values vary 5.3× across this county — from $38,900 in 57466 (Onaka) to $207,400 in 57435 (Cresbard).
Density varies 2× across the county — from 1 people/sq mi in 57466 (Onaka) to 2 in 57438 (Faulkton).
Educational attainment ranges from 18.0% bachelor's+ in 57473 (Seneca) to 24.9% in 57438 (Faulkton) — the breadth of educational profiles across the area.
Within South Dakota, this is the #56 most populous of 82 counties and ranks #54 for median household income .
Weighted by population, the typical household earns about $71,665 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.0% of adults age 25+ hold a bachelor's degree or higher (297 of 1,294 reporting).
5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 4.6× 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.
Faulk County lost 13.0% of residents between 2014 and 2024. ZIPs that shed the largest share: