| ZIP Codes: | 8 ZIP Codes (7 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 785 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:32 PM |
| Population: | 68,780 [See All] |
| FIPS: | 20161 |
| CBSA: | Manhattan, KS |
| Land Area: | 591 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 39.2596, -96.6846 |
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68,780 residents live across 8 ZIPs covering 591 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 68,956 to 68,780 from 2014 to 2024 — a -0.3% change. 3 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 66503 (Manhattan, $97,846 median) and poorest ZIP 66502 (Manhattan, $54,833) are 11.1 miles apart — a 1.8× income gap across local geography.
Median home values vary 2.2× across this county — from $156,800 in 66517 (Ogden) to $339,100 in 66503 (Manhattan).
Density varies 600× across the county — from 7 people/sq mi in 66554 (Randolph) to 4,471 in 66506 (Manhattan).
Educational attainment ranges from 24.8% bachelor's+ in 66449 (Leonardville) to 61.8% in 66503 (Manhattan) — the breadth of educational profiles across the area.
Within Kansas, this is the #7 most populous of 106 counties and ranks #10 for median household income .
Weighted by population, the typical household earns about $67,972 across the county — reflecting what a typical resident sees, not a simple ZIP average.
51.3% of adults age 25+ hold a bachelor's degree or higher (19,443 of 37,918 reporting). The most-educated ZIPs cluster around Manhattan.
7 Standard delivery, 1 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.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 66502 | Manhattan | Standard | 43,693 | $54,833 | 227.1 | -4.3% |
| 66503 | Manhattan | Standard | 17,273 | $97,846 | 116.7 | 15.6% |
| 66506 | Manhattan | Standard | 3,155 | — | 0.7 | -15.6% |
| 66517 | Ogden | Standard | 1,696 | $68,421 | 3.5 | -14.6% |
| 66531 | Riley | Standard | 1,256 | $79,063 | 69.8 | -8.4% |
| 66449 | Leonardville | Standard | 937 | $90,089 | 69.8 | 57.7% |
| 66554 | Randolph | Standard | 770 | $97,411 | 103.2 | 19.4% |
| 66505 | Manhattan | PO Box | — | — | 0.0 | — |