Johnson County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 21st-largest in Missouri
The population of Johnson County, Missouri is 54,331 as of the 2023 American Community Survey, making it the 21st-largest county in Missouri. The median household income is $67,123, the median home value is $221,400, and the median age is 31.3.
The population of Johnson County has grown 6.1% since 2010 (52,689 → 55,880), a +0.42% annualized rate.
54,331
Population
+0.42%
Annual growth
66
People / sq mi
$67,123
Median Income
$221,400
Median Home Value
Johnson County covers 829 sq mi of land at 65.5 people per square mile.
About Johnson County, MO
Johnson County is a county in Missouri with a population of 54,331. It ranks #21 among counties in Missouri by population. The median age is 31.3, younger than the national median. The population is 51.2% male and 48.8% female.
The median household income in Johnson County is $67,123, below the US median of $74,580. 6.8% of residents live below the federal poverty level. Home values sit at a median of $221,400, with monthly rent averaging $905. The homeownership rate of 63.9% is close to the national rate of 64.8%.
Educational attainment in Johnson County reflects 29.1% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 23.8 minutes each way.
Johnson County Population History (2010-2024)
The county of Johnson County had a population of 52,689 in 2010 and 55,880 in 2024, a 6.1% growth over 14 years. The peak was 55,880 in 2024. Average annual growth rate: 0.42%.
55,880
Population (2024)
52,689
Population (2010)
55,880
Peak (2024)
0.42%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 52,689 |
| 2011 | 53,417 |
| 2012 | 54,335 |
| 2013 | 54,331 |
| 2014 | 54,221 |
| 2015 | 53,717 |
| 2016 | 53,722 |
| 2017 | 53,893 |
| 2018 | 53,718 |
| 2019 | 54,187 |
| 2020 | 54,039 |
| 2021 | 54,209 |
| 2022 | 54,423 |
| 2023 | 55,107 |
| 2024 | 55,880 |
Race & Ethnicity
| White | 86.2% |
| Black or African American | 3.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.1% |
| Two or More Races | 0.0% |
Age & Sex
31.3
Median Age
48.8%
Female
51.2%
Male
13.0%
Age 65+
Age Distribution
Children (under 15): 18.8% · Seniors (65+): 13.0%
Income & Poverty
| Median household income | $67,123$-1,797 vs state |
| Mean household income | $82,729 |
| Per-capita income | $32,093 |
| Poverty rate | 6.8%-1.6% vs state |
| Unemployment rate | 2.8% |
| Employment-to-population | 55.1% |
Top Industries by Employment
The largest employment sector in Johnson County is professional & business services, accounting for 26.2% of workers.
How residents commute
0.3%
Drive alone
3.6%
Carpool
79.3%
Public transit
6.3%
Work from home
23.8 min
Avg commute
Housing
$221,400+$5,800 vs state
Median home value
$905
Median rent
63.9%
Homeownership rate
22,663
Total housing units
91.3%
Occupied
8.7%
Vacant
36.1%
Renter-occupied
Social & access
90.5%
With health insurance
96.2%
With broadband internet
36.7%
Foreign-born
13.4%
Veterans (18+)
13.6%
With a disability
95.0%
Speak language other than English at home
Education
93.1%
High School+
29.1%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Johnson County, Missouri has a population of 54,331 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 21st-largest county in Missouri. Population density is 66 people per square mile.
The population of Johnson County has grown 6.1% since 2010 (52,689 → 55,880), a +0.42% annualized rate.
The median household income in Johnson County, Missouri is $67,123, with mean (average) household income of $82,729 and per-capita income of $32,093. 6.8% of residents live below the federal poverty level.
In Johnson County, the largest racial and ethnic groups are White (86.2%), Black or African American (3.7%), Hispanic or Latino (2.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Johnson County, Missouri is 31.3 years. Residents are 48.8% female and 51.2% male.
The median home value in Johnson County is $221,400 and median monthly rent is $905. 63.9% of occupied housing units are owner-occupied. The county has 22,663 total housing units, 8.7% of which are vacant.
The largest employment sector in Johnson County, Missouri is professional, scientific, and management services, employing 26.2% of workers. The unemployment rate is 2.8%.
Kansas City is among the largest cities associated with Johnson 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.