Linn County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 77th-largest in Missouri
The population of Linn County, Missouri is 11,850 as of the 2023 American Community Survey, making it the 77th-largest county in Missouri. The median household income is $61,975, the median home value is $117,300, and the median age is 42.4.
The population of Linn County has declined 6.8% since 2010 (12,774 → 11,910), a -0.50% annualized rate.
11,850
Population
-0.50%
Annual growth
19
People / sq mi
$61,975
Median Income
$117,300
Median Home Value
Linn County covers 616 sq mi of land at 19.2 people per square mile.
About Linn County, MO
Linn County is a county in Missouri with a population of 11,850. It ranks #77 among counties in Missouri by population. The median age is 42.4, older than the national median. The population is 49.1% male and 50.9% female.
The median household income in Linn County is $61,975, below the US median of $74,580. 13.0% of residents live below the federal poverty level. Home values sit at a median of $117,300, with monthly rent averaging $612. The homeownership rate of 78.7% is higher than the national rate of 64.8%.
Educational attainment in Linn County reflects 20.1% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 20.0 minutes each way.
Linn County Population History (2010-2024)
The county of Linn County had a population of 12,774 in 2010 and 11,910 in 2024, a -6.8% growth over 14 years. The peak was 12,774 in 2010. Average annual growth rate: -0.50%.
11,910
Population (2024)
12,774
Population (2010)
12,774
Peak (2010)
-0.50%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 12,774 |
| 2011 | 12,602 |
| 2012 | 12,489 |
| 2013 | 12,330 |
| 2014 | 12,318 |
| 2015 | 12,290 |
| 2016 | 12,123 |
| 2017 | 12,159 |
| 2018 | 12,002 |
| 2019 | 11,906 |
| 2020 | 11,857 |
| 2021 | 11,844 |
| 2022 | 11,842 |
| 2023 | 11,808 |
| 2024 | 11,910 |
Race & Ethnicity
| White | 95.1% |
| Black or African American | 0.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
42.4
Median Age
50.9%
Female
49.1%
Male
21.3%
Age 65+
Age Distribution
Children (under 15): 19.2% · Seniors (65+): 21.3%
Income & Poverty
| Median household income | $61,975$-6,945 vs state |
| Mean household income | $81,761 |
| Per-capita income | $33,769 |
| Poverty rate | 13.0%+4.6% vs state |
| Unemployment rate | 1.6% |
| Employment-to-population | 59.4% |
Top Industries by Employment
The largest employment sector in Linn County is professional & business services, accounting for 21.5% of workers.
How residents commute
0.1%
Drive alone
2.3%
Carpool
81.3%
Public transit
8.2%
Work from home
20.0 min
Avg commute
Housing
$117,300$-98,300 vs state
Median home value
$612
Median rent
78.7%
Homeownership rate
6,007
Total housing units
80.0%
Occupied
20.0%
Vacant
21.3%
Renter-occupied
Social & access
90.2%
With health insurance
89.0%
With broadband internet
21.6%
Foreign-born
7.3%
Veterans (18+)
14.2%
With a disability
97.2%
Speak language other than English at home
Education
91.5%
High School+
20.1%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Linn County, Missouri has a population of 11,850 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 77th-largest county in Missouri. Population density is 19 people per square mile.
The population of Linn County has declined 6.8% since 2010 (12,774 → 11,910), a -0.50% annualized rate.
The median household income in Linn County, Missouri is $61,975, with mean (average) household income of $81,761 and per-capita income of $33,769. 13.0% of residents live below the federal poverty level.
In Linn County, the largest racial and ethnic groups are White (95.1%), Hispanic or Latino (0.8%), Black or African American (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Linn County, Missouri is 42.4 years. Residents are 50.9% female and 49.1% male.
The median home value in Linn County is $117,300 and median monthly rent is $612. 78.7% of occupied housing units are owner-occupied. The county has 6,007 total housing units, 20.0% of which are vacant.
The largest employment sector in Linn County, Missouri is professional, scientific, and management services, employing 21.5% of workers. The unemployment rate is 1.6%.
Kansas City is among the largest cities associated with Linn 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.