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
Housing cost is the defining feature of Linn County: the median home is valued at $117,300. Linn County is a county in Missouri with a population of 11,850.
Median household income is $61,975, below the US median of $78,538. The poverty rate is 13.0%, close to the national 12.4%. Property is affordable here, the median home worth $117,300, with typical rent around $612.
Degree attainment is mid-range for US counties: 20.1% of adults hold a four-year degree, below the national 35.0%. Around 8.2% of workers work from home, below the national 14.0%, and the average commute runs about 20 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.