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Johnson County, MO
9 cities and towns and 8 ZIP codes in Johnson County, Missouri.
Population
54,732
Land area
829sq mi
People per sq mi
66
ZIP codes
8
Cities and towns in Johnson County
Johnson County at a glance
- Johnson County is 27% less dense than Missouri as a whole.
- It is the 21st most populous of 115 counties in Missouri.
- Households here earn a median of $67,272 a year, 5% less than the Missouri figure of $70,702.
- A typical owner-occupied home is valued at $235,700 and median rent is $932 a month.
- The biggest population centers are Warrensburg (19,582), Whiteman AFB (3,517) and Knob Noster (2,838).
Local data for Johnson County, MO
Counts from official public data
- Hospitals1
- Emergency Rooms1
- Nursing Homes5
- Schools24
- Colleges3
- Libraries3
- Banks11
- Post Offices5
- Parks22
- Grocery Stores13
- Restaurants131
- Affordable Housing3
- Home Health Agencies1
- Dialysis Centers1
- Community Health Centers5
- Mental Health & Addiction Treatment5
- Community Colleges & Trade Schools1
- Toxic Release Facilities6
- Historic Places17
Housing and community stats
Johnson County, MO, American Community Survey 2020-2024
Median household income
$67,272
Poverty rate
11.8%
Median home value
$235,700
Prices +4.7% in a year
Median rent
$932/mo
Homeownership
63.5%
Bachelor's or higher
29.1%
Median age
31.5
Average commute
23.7 min
Largest reported origins and ancestries: German Americans (10,533), Irish Americans (6,021), Mexican Americans (1,661).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.3%
Aug 2026, -0.3 pts in a year
Average annual pay
$48,515
16,381 jobs, 2025
Income per person
$48,420
BEA, 2024
Federal spending
$507M
FY 2026, $9,390 per person
PPP loans
$48.5M
1,691 loans, 6,889 jobs reported
Campaign donations
$132K
Itemized, 2026 cycle
How people get to work
Johnson County, MO, workers 16 and older. American Community Survey 5-year estimates
- Drove alone79.1%
- Carpooled8.5%
- Public transit0.2%
- Walked4.2%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other1.0%
- Worked from home7.0%
Average one-way commute: 23.7 minutes for people who do not work from home.
Environment and hazard risk
Johnson County, MO, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: cold wave
Storm events since 1996
718
Most often hail
Flood insurance policies
68
0.3% of homes, county
July high / Jan low
90° / 18°F
42.1 inches of rain a year
Hazards, floods and storm historyCheck a flood zone17 historic places
Health statistics
Share of adults in Johnson County, MO, CDC PLACES estimates
Obesity
35.3%
U.S. 33.3% +2.0 pts
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
15.2%
U.S. 12.8% +2.4 pts
Uninsured (18-64)
8.6%
U.S. 11.1% -2.5 pts
Cities, towns and ZIP codes in Johnson County
Population shown
Frequently asked questions
- What is the largest city in Johnson County, MO?
- Warrensburg is the largest city or town in Johnson County, with about 19,582 residents.
- How many ZIP codes are in Johnson County?
- Johnson County includes 8 ZIP Code Tabulation Areas, including 64019, 64040, 64061, 64093, 64733.
- What is the population of Johnson County, MO?
- About 54,732 people live in Johnson County, based on American Community Survey 5-year estimates.
- What counties border Johnson County?
- Johnson County borders Jackson County, Cass County, Pettis County, Lafayette County, Henry County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023