| ZIP Codes: | 9 ZIP Codes (9 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 785 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:12 PM |
| Population: | 12,703 [See All] |
| FIPS: | 20085 |
| CBSA: | Topeka, KS |
| Land Area: | 661 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 39.4420, -95.7590 |
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12,703 residents live across 9 ZIPs covering 661 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 13,442 to 12,703 from 2014 to 2024 — a -5.5% change. 5 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 66419 (Denison, $100,152 median) and poorest ZIP 66540 (Soldier, $52,368) are 21.5 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.0× across this county — from $116,100 in 66419 (Denison) to $234,700 in 66440 (Hoyt).
Educational attainment ranges from 17.4% bachelor's+ in 66509 (Mayetta) to 30.7% in 66440 (Hoyt) — the breadth of educational profiles across the area.
Within Kansas, this is the #35 most populous of 106 counties and ranks #19 for median household income .
Weighted by population, the typical household earns about $75,843 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.6% of adults age 25+ hold a bachelor's degree or higher (1,984 of 8,791 reporting).
9 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.
Jackson County lost 5.5% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 66436 | Holton | Standard | 5,537 | $71,016 | 173.5 | -5.4% |
| 66509 | Mayetta | Standard | 1,974 | $65,958 | 132.6 | -27.3% |
| 66440 | Hoyt | Standard | 1,943 | $97,109 | 44.7 | -10.1% |
| 66419 | Denison | Standard | 600 | $100,152 | 21.8 | 94.2% |
| 66540 | Soldier | Standard | 582 | $52,368 | 82.7 | 39.6% |
| 66552 | Whiting | Standard | 581 | $78,500 | 49.5 | 19.8% |
| 66418 | Delia | Standard | 556 | $77,885 | 70.1 | -16.6% |
| 66416 | Circleville | Standard | 522 | $74,375 | 35.7 | 13.0% |
| 66516 | Netawaka | Standard | 408 | $80,938 | 50.6 | 10.3% |