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 distinguished by its share of foreign-born residents, 58.7% of the population. Lewis County is a county in Missouri with a population of 9,945.
Incomes run on the lower side: a median household income of $52,340, below the US median of $78,538. The poverty rate is 8.0%, below the national 12.4%. Housing is relatively affordable, with a median home value of $118,900, with typical rent around $627.
College attainment is 16.5%, below the national 35.0%. About 7.9% of the workforce is home-based, below the national 14.0%, and the average commute runs about 23 minutes each way.
The large foreign-born share is a defining thread in Lewis County, shaping language, household composition, and the labor force behind the economic figures above.
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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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.