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 skews on age — the median resident is 31.3, younger than the national median. With 54,331 residents, Johnson County is a county in Missouri. It ranks #21 among counties in Missouri by population.
Median household income is $67,123, below the US median of $78,538. Only 6.8% of residents live in poverty, below the national 12.4%. Median home value is $221,400, with typical rent around $905.
College attainment is above the local norm at 29.1%, below the national 35.0%. Around 6.3% of workers work from home, below the national 14.0%, and the average commute runs about 24 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.
Johnson County, MO Climate
Johnson County, MO has an average annual temperature of 12.4°C (54°F) and receives about 1026 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.4°C
Avg Temp
1026
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 27° | 36 mm |
| February | 1° / 33° | 40 mm |
| March | 7° / 44° | 77 mm |
| April | 13° / 55° | 98 mm |
| May | 18° / 64° | 124 mm |
| June | 23° / 73° | 122 mm |
| July | 26° / 78° | 98 mm |
| August | 25° / 76° | 96 mm |
| September | 20° / 69° | 115 mm |
| October | 14° / 57° | 95 mm |
| November | 7° / 44° | 75 mm |
| December | 1° / 33° | 50 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Johnson County, MO
The most comfortable months to visit Johnson County, MO are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -8°C low). May is usually the wettest month.
Where to stay near Johnson County
Visiting or relocating to Johnson County, MO? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Johnson County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Johnson County?
Get relocation and cost-of-living insights for Johnson County, MO by email. No spam, unsubscribe anytime.
More from Missouri
Population 996,618
Population 717,021
Population 409,830
Population 301,121
Full rankings of Missouri counties
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.