| ZIP Codes: | 7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 913 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:13 PM |
| Population: | 79,127 [See All] |
| FIPS: | 20103 |
| CBSA: | Kansas City, MO-KS |
| Land Area: | 390 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 39.2147, -94.9999 |
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79,127 residents live across 7 ZIPs covering 390 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 72,812 to 79,127 from 2014 to 2024 — a +8.7% change. 6 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 66007 (Basehor, $121,266 median) and poorest ZIP 66048 (Leavenworth, $72,734) are 11.7 miles apart — a 1.7× income gap across local geography.
Median home values vary 1.7× across this county — from $219,100 in 66048 (Leavenworth) to $381,200 in 66007 (Basehor).
Density varies 44× across the county — from 28 people/sq mi in 66020 (Easton) to 1,257 in 66043 (Lansing).
Educational attainment ranges from 24.8% bachelor's+ in 66020 (Easton) to 60.9% in 66027 (Fort Leavenworth) — the breadth of educational profiles across the area.
Within Kansas, this is the #6 most populous of 106 counties and ranks #3 for median household income with the #2 fastest decade growth .
Weighted by population, the typical household earns about $89,867 across the county — reflecting what a typical resident sees, not a simple ZIP average.
35.9% of adults age 25+ hold a bachelor's degree or higher (19,422 of 54,067 reporting).
7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 66048 | Leavenworth | Standard | 35,717 | $72,734 | 136.4 | 0.8% |
| 66043 | Lansing | Standard | 11,056 | $103,060 | 8.8 | 0.2% |
| 66086 | Tonganoxie | Standard | 10,940 | $98,318 | 95.7 | 9.1% |
| 66007 | Basehor | Standard | 10,150 | $121,266 | 32.3 | 55.5% |
| 66027 | Fort Leavenworth | Standard | 7,365 | $102,208 | 9.8 | 25.2% |
| 66052 | Linwood | Standard | 2,090 | $82,411 | 43.9 | -10.9% |
| 66020 | Easton | Standard | 1,809 | $78,594 | 63.6 | 16.8% |