| ZIP Codes: | 9 ZIP Codes (8 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 660 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:46 PM |
| Population: | 23,284 [See All] |
| FIPS: | 29195 |
| CBSA: | Marshall, MO |
| Land Area: | 820 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 39.1338, -93.1776 |
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23,284 residents live across 9 ZIPs covering 820 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 23,612 to 23,284 from 2014 to 2024 — a -1.4% change. 3 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 65347 (Nelson, $103,125 median) and poorest ZIP 65330 (Gilliam, $42,188) are 16.9 miles apart — a 2.4× income gap across local geography.
Median home values vary 2.8× across this county — from $91,700 in 65339 (Malta Bend) to $254,400 in 65344 (Miami).
Density varies 31× across the county — from 2 people/sq mi in 65344 (Miami) to 63 in 65340 (Marshall).
Educational attainment ranges from 12.7% bachelor's+ in 65351 (Sweet Springs) to 30.6% in 65344 (Miami) — the breadth of educational profiles across the area.
Within Missouri, this is the #46 most populous of 116 counties and ranks #68 for median household income .
Weighted by population, the typical household earns about $57,854 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.7% of adults age 25+ hold a bachelor's degree or higher (3,371 of 14,838 reporting).
8 Standard delivery, 1 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.
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 |
|---|---|---|---|---|---|---|
| 65340 | Marshall | Standard | 16,026 | $58,118 | 256.3 | 1.3% |
| 65349 | Slater | Standard | 2,480 | $45,982 | 104.8 | -2.4% |
| 65351 | Sweet Springs | Standard | 2,122 | $55,625 | 106.2 | -13.5% |
| 65347 | Nelson | Standard | 846 | $103,125 | 81.2 | -1.3% |
| 65339 | Malta Bend | Standard | 592 | $43,750 | 84.3 | -17.4% |
| 65330 | Gilliam | Standard | 575 | $42,188 | 59.8 | 44.5% |
| 65321 | Blackburn | Standard | 405 | $82,019 | 42.3 | -16.1% |
| 65344 | Miami | Standard | 173 | $61,667 | 84.6 | -43.8% |
| 65320 | Arrow Rock | PO Box | 65 | $35,469 | 0.2 | 71.1% |