Lewis County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 86th-largest in Missouri
The population of Lewis County, Missouri is 9,945 as of the 2023 American Community Survey, making it the 86th-largest county in Missouri. The median household income is $52,340, the median home value is $118,900, and the median age is 38.2.
The population of Lewis County has declined 3.5% since 2010 (10,206 → 9,852), a -0.25% annualized rate.
9,945
Population
-0.25%
Annual growth
20
People / sq mi
$52,340
Median Income
$118,900
Median Home Value
Lewis County covers 505 sq mi of land at 19.7 people per square mile.
About Lewis County, MO
Lewis County is a county in Missouri with a population of 9,945. It ranks #86 among counties in Missouri by population. The median age is 38.2, in line with the national median. The population is 51.3% male and 48.7% female.
The median household income in Lewis County is $52,340, below the US median of $74,580. 8.0% of residents live below the federal poverty level. Home values sit at a median of $118,900, with monthly rent averaging $627. The homeownership rate of 77.0% is higher than the national rate of 64.8%.
Educational attainment in Lewis County reflects 16.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 23.2 minutes each way.
Lewis County Population History (2010-2024)
The county of Lewis County had a population of 10,206 in 2010 and 9,852 in 2024, a -3.5% growth over 14 years. The peak was 10,217 in 2011. Average annual growth rate: -0.25%.
9,852
Population (2024)
10,206
Population (2010)
10,217
Peak (2011)
-0.25%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,206 |
| 2011 | 10,217 |
| 2012 | 10,116 |
| 2013 | 10,110 |
| 2014 | 10,098 |
| 2015 | 10,141 |
| 2016 | 10,091 |
| 2017 | 9,957 |
| 2018 | 9,844 |
| 2019 | 9,787 |
| 2020 | 10,039 |
| 2021 | 10,000 |
| 2022 | 9,888 |
| 2023 | 9,840 |
| 2024 | 9,852 |
Race & Ethnicity
| White | 92.2% |
| Black or African American | 3.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.3% |
| Two or More Races | 0.0% |
Age & Sex
38.2
Median Age
48.7%
Female
51.3%
Male
18.8%
Age 65+
Age Distribution
Children (under 15): 17.3% · Seniors (65+): 18.8%
Income & Poverty
| Median household income | $52,340$-16,580 vs state |
| Mean household income | $68,625 |
| Per-capita income | $26,018 |
| Poverty rate | 8.0%-0.4% vs state |
| Unemployment rate | 3.4% |
| Employment-to-population | 53.2% |
Top Industries by Employment
The largest employment sector in Lewis County is professional & business services, accounting for 25.2% of workers.
How residents commute
0.4%
Drive alone
2.8%
Carpool
78.3%
Public transit
7.9%
Work from home
23.2 min
Avg commute
Housing
$118,900$-96,700 vs state
Median home value
$627
Median rent
77.0%
Homeownership rate
4,315
Total housing units
74.5%
Occupied
25.5%
Vacant
23.0%
Renter-occupied
Social & access
89.4%
With health insurance
87.7%
With broadband internet
58.7%
Foreign-born
8.1%
Veterans (18+)
12.9%
With a disability
97.7%
Speak language other than English at home
Education
87.5%
High School+
16.5%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Lewis County, Missouri has a population of 9,945 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 86th-largest county in Missouri. Population density is 20 people per square mile.
The population of Lewis County has declined 3.5% since 2010 (10,206 → 9,852), a -0.25% annualized rate.
The median household income in Lewis County, Missouri is $52,340, with mean (average) household income of $68,625 and per-capita income of $26,018. 8.0% of residents live below the federal poverty level.
In Lewis County, the largest racial and ethnic groups are White (92.2%), Black or African American (3.0%), Hispanic or Latino (2.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Lewis County, Missouri is 38.2 years. Residents are 48.7% female and 51.3% male.
The median home value in Lewis County is $118,900 and median monthly rent is $627. 77.0% of occupied housing units are owner-occupied. The county has 4,315 total housing units, 25.5% of which are vacant.
The largest employment sector in Lewis County, Missouri is professional, scientific, and management services, employing 25.2% of workers. The unemployment rate is 3.4%.
Kansas City is among the largest cities associated with Lewis County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.