Lewis County, MO ZIP codes
There are 8 ZIP codes in Lewis County, MO, in 8 towns, from 63435 to 63473. The largest are 63435 (Canton), 63448 (La Grange) and 63440 (Ewing).
The county seat is Monticello.
- ZIP codes
- 8
- Towns
- 8
- County seat
- Monticello
- County FIPS
29111- State
- Missouri
- Population
- 9,924
- Median household income
- $59,934
- Land area
- 505 sq mi
- Metro area
- Quincy
Lewis County ZIP codes by town
- Monticello (county seat)
- 63457
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Lewis County ZIP codes
The ZIP codes of Lewis County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Lewis County in numbers
About 9,924 people live in Lewis County, in 3,185 households, the 86th most populous of Missouri's 115 counties. The median household income is $59,934 a year, 15% below the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $130,200 (43% below the Missouri median), and median gross rent is $644 a month. The median age is 37.6; 16.8% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 24 minutes.
| Population | 9,924 |
|---|---|
| Households | 3,185 |
| Median age | 37.6 |
| Median household income | $59,934 |
| Median home value | $130,200 |
| Median gross rent | $644 |
| Bachelor's degree or higher | 16.8% |
| Mean commute | 23.8 min |
| Population density | 20 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Lewis County
| Town | ZIP codes | Population |
|---|---|---|
| Canton | 1 | 2,752 |
| La Grange | 1 | 1,033 |
| La Belle | 1 | 775 |
| Ewing | 1 | 542 |
| Lewistown | 1 | 343 |
| Monticello | 1 | 233 |
| Durham | 1 | 232 |
| Williamstown | 1 | 23 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Lewis County.
Not sure you are in Lewis County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Lewis County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
63435 | Canton , MO | Standard | 4,318 | $62,102 | $151,800 |
63438 | Durham , MO | Standard | 232 | $42,188 | $187,500 |
63440 | Ewing , MO | Standard | 1,136 | $60,217 | $147,500 |
63447 | La Belle , MO | Standard | 1,060 | $43,478 | $94,400 |
63448 | La Grange , MO | Standard | 1,760 | $61,417 | $117,800 |
63452 | Lewistown , MO | Standard | 1,026 | $62,292 | $86,500 |
63457 | Monticello , MO | Standard | 389 | $57,778 | $181,300 |
63473 | Williamstown , MO | Standard | 375 | $57,174 | $166,300 |
Cite this page
zipcodes.pro. “Lewis County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mo/county/lewis
Underlying data is public domain or openly licensed — sources, vintages and licences.