| ZIP Codes: | 11 ZIP Codes (11 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 785 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:13 PM |
| Population: | 10,165 [See All] |
| FIPS: | 20117 |
| Land Area: | 987 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 39.8149, -96.5153 |
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10,165 residents live across 11 ZIPs covering 987 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 10,247 to 10,165 from 2014 to 2024 — a -0.8% change. 5 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 66544 (Vermillion, $97,212 median) and poorest ZIP 66541 (Summerfield, $36,563) are 18.4 miles apart — a 2.7× income gap across local geography.
Median home values vary 4.7× across this county — from $75,800 in 66544 (Vermillion) to $357,700 in 66438 (Home).
Density varies 7× across the county — from 3 people/sq mi in 66544 (Vermillion) to 24 in 66508 (Marysville).
Educational attainment ranges from 4.3% bachelor's+ in 66412 (Bremen) to 23.9% in 66427 (Frankfort) — the breadth of educational profiles across the area.
Within Kansas, this is the #38 most populous of 106 counties and ranks #38 for median household income .
Weighted by population, the typical household earns about $65,418 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.2% of adults age 25+ hold a bachelor's degree or higher (1,388 of 7,226 reporting).
11 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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 66508 | Marysville | Standard | 3,987 | $55,636 | 166.0 | -9.2% |
| 66427 | Frankfort | Standard | 1,334 | $79,481 | 209.5 | 9.1% |
| 66411 | Blue Rapids | Standard | 1,127 | $57,361 | 113.1 | -12.8% |
| 66548 | Waterville | Standard | 975 | $70,568 | 82.3 | 9.9% |
| 66403 | Axtell | Standard | 801 | $71,875 | 88.7 | -4.6% |
| 66412 | Bremen | Standard | 644 | $86,638 | 53.0 | 255.8% |
| 66406 | Beattie | Standard | 365 | $67,955 | 55.8 | -31.4% |
| 66544 | Vermillion | Standard | 287 | $97,212 | 87.1 | 9.5% |
| 66541 | Summerfield | Standard | 234 | $36,563 | 37.7 | -9.7% |
| 66518 | Oketo | Standard | 211 | — | 39.5 | 67.5% |
| 66438 | Home | Standard | 200 | $76,250 | 54.6 | -21.6% |