| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 660 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:40 PM |
| Population: | 5,129 [See All] |
| FIPS: | 29005 |
| Land Area: | 501 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 40.4519, -95.4386 |
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5,129 residents live across 5 ZIPs covering 501 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 5,417 to 5,129 from 2014 to 2024 — a -5.3% change. 2 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 64482 (Rock Port, $66,534 median) and poorest ZIP 64498 (Westboro, $48,750) are 14.1 miles apart — a 1.4× income gap across local geography.
Median home values vary 4.5× across this county — from $45,700 in 64498 (Westboro) to $206,600 in 64496 (Watson).
Density varies 5× across the county — from 3 people/sq mi in 64498 (Westboro) to 14 in 64482 (Rock Port).
Educational attainment ranges from 16.4% bachelor's+ in 64446 (Fairfax) to 26.4% in 64482 (Rock Port) — the breadth of educational profiles across the area.
Within Missouri, this is the #108 most populous of 116 counties and ranks #84 for median household income .
Weighted by population, the typical household earns about $60,300 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.0% of adults age 25+ hold a bachelor's degree or higher (824 of 3,753 reporting).
5 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.
Atchison County lost 5.3% of residents between 2014 and 2024.