| ZIP Codes: | 7 ZIP Codes (4 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 405 / 572 / 580 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:27 PM |
| Population: | 21,640 [See All] |
| FIPS: | 40133 |
| Land Area: | 570 sq mi |
| Water Area: | 7 sq mi |
| Coordinates: | 35.1580, -96.6041 |
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21,640 residents live across 7 ZIPs covering 570 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 24,403 to 21,640 from 2014 to 2024 — a -11.3% change. 0 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 74837 (Cromwell, $58,618 median) and poorest ZIP 74849 (Konawa, $41,053) are 30.8 miles apart — a 1.4× income gap across local geography.
Median home values vary 2.4× across this county — from $50,000 in 74830 (Bowlegs) to $119,700 in 74868 (Seminole).
Density varies 63× across the county — from 6 people/sq mi in 74867 (Sasakwa) to 388 in 74830 (Bowlegs).
Educational attainment ranges from 13.9% bachelor's+ in 74884 (Wewoka) to 17.5% in 74868 (Seminole) — the breadth of educational profiles across the area.
Within Oklahoma, this is the #37 most populous of 78 counties and ranks #68 for median household income .
Weighted by population, the typical household earns about $46,997 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.5% of adults age 25+ hold a bachelor's degree or higher (2,380 of 14,454 reporting).
4 Standard delivery, 3 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.
Seminole County lost 11.3% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 74868 | Seminole | Standard | 12,543 | $48,043 | 194.6 | -7.3% |
| 74884 | Wewoka | Standard | 5,474 | $46,658 | 146.1 | -6.4% |
| 74849 | Konawa | Standard | 2,727 | $41,053 | 132.5 | -17.5% |
| 74867 | Sasakwa | Standard | 595 | $50,625 | 96.9 | -42.6% |
| 74837 | Cromwell | PO Box | 153 | $58,618 | 0.0 | -61.4% |
| 74830 | Bowlegs | PO Box | 148 | $53,750 | 0.4 | -46.4% |
| 74818 | Seminole | PO Box | — | — | 0.0 | — |