| ZIP Codes: | 8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 235 / 573 / 660 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:54:01 PM |
| Population: | 10,296 [See All] |
| FIPS: | 29111 |
| CBSA: | Quincy, IL-MO |
| Land Area: | 596 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 40.0981, -91.7251 |
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10,296 residents live across 8 ZIPs covering 596 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 10,949 to 10,296 from 2014 to 2024 — a -6.0% change. 3 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 63452 (Lewistown, $62,292 median) and poorest ZIP 63438 (Durham, $42,188) are 11.8 miles apart — a 1.5× income gap across local geography.
Median home values vary 2.2× across this county — from $86,500 in 63452 (Lewistown) to $187,500 in 63438 (Durham).
Density varies 6× across the county — from 5 people/sq mi in 63473 (Williamstown) to 33 in 63448 (La Grange).
Educational attainment ranges from 5.4% bachelor's+ in 63473 (Williamstown) to 22.1% in 63435 (Canton) — the breadth of educational profiles across the area.
Within Missouri, this is the #80 most populous of 116 counties and ranks #87 for median household income .
Weighted by population, the typical household earns about $59,087 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.3% of adults age 25+ hold a bachelor's degree or higher (1,088 of 6,661 reporting).
8 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.
Lewis County lost 6.0% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 63435 | Canton | Standard | 4,318 | $62,102 | 138.3 | -4.7% |
| 63448 | La Grange | Standard | 1,760 | $61,417 | 53.6 | 6.1% |
| 63440 | Ewing | Standard | 1,136 | $60,217 | 94.8 | -8.3% |
| 63447 | La Belle | Standard | 1,060 | $43,478 | 88.9 | -6.8% |
| 63452 | Lewistown | Standard | 1,026 | $62,292 | 95.8 | -3.0% |
| 63457 | Monticello | Standard | 389 | $57,778 | 38.0 | 15.4% |
| 63473 | Williamstown | Standard | 375 | $57,174 | 70.6 | 23.8% |
| 63438 | Durham | Standard | 232 | $42,188 | 15.9 | -66.2% |