• county
  • FIPS 29101
  • Largest town: Warrensburg

Johnson County, Missouri

Johnson County had 55,880 residents in the Census Vintage 2024 estimate, on 829.3 square miles of land. It ranks 21st of 115 in Missouri by population and 8th by land area.

Population
55,880
#21 of 115 in Missouri · #936 in US
Area
829.3 sq mi
#8 of 115 in Missouri · #1,017 in US
Density
67 / sq mi
#27 of 115 in Missouri · #1,206 in US
Median household income
$68,326
#22 of 115 in Missouri · #1,113 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Johnson County within Missouri. Pin: Jefferson City.

Measure from here

Tools and pages that start from Johnson County

Johnson County population, land area and income

Johnson County had 55,880 residents in the Census Vintage 2024 estimate, on 829.3 square miles of land. It ranks 21st of 115 in Missouri by population and 8th by land area. That works out to 67.4 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Missouri has 19,100 residents, so Johnson County is 2.9 times that size.

Its SAIPE 2023 median household income of $68,326 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

55,880

3144th1st

936th of 3,144 (US)

Land area

829 sq mi

3144th1st

1017th of 3,144 (US)

Density

67.4 / sq mi

3144th1st

1206th of 3,144 (US)

Median household income

$68,326

3143rd1st

1113th of 3,143 (US)

Rank within Missouri (115)

Population

55,880

115th1st

21st of 115 (MO)

Land area

829 sq mi

115th1st

8th of 115 (MO)

Density

67.4 / sq mi

115th1st

27th of 115 (MO)

Median household income

$68,326

115th1st

22nd of 115 (MO)

How Johnson County's population changed since 2020

Johnson County gained 1,841 residents between the July 2020 and July 2024 estimates, a rise of 3.4%. That ranks 26th of 115 in Missouri for growth. The median Missouri county changed by +1.4%, and the state as a whole by +1.5%.

Since the April 2020 estimates base, Johnson County recorded 2,975 births and 2,142 deaths, a natural change of +833. Net international migration added +746 and net domestic migration, people moving to or from other US counties, came to +264. The largest single component was natural change, which added 833 people.

54.0k202054.2k202154.4k202255.1k202355.9k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
2,975
Deaths
2,142
Net international migration
+746
Net domestic migration
+264
Change, July 2023 to July 2024
+773

Where Johnson County is

The Census internal point of Johnson County is at 38.741500, -93.811900. It sits in UTM zone 15N. The map shades Missouri's 115 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Johnson County outlined. Dots are towns of 1,000+ people with residents in it.

Pettis County: +1.8%Henry County: +2.7%Texas County: +5.7%Madison County: +1.8%St. Louis city: -6.9%Cole County: +1.3%Washington County: +0.6%Macon County: -0.1%Barton County: +0.8%Grundy County: +0.1%Cedar County: +5.7%Randolph County: -1.6%Ray County: +0.3%Caldwell County: +2.0%Benton County: +6.1%Douglas County: +5.9%Shannon County: +3.4%Dade County: +0.5%Wright County: +7.1%Gentry County: +2.6%Lawrence County: +3.0%Cooper County: +2.9%Hickory County: +5.6%Moniteau County: +0.5%Dent County: +2.3%Monroe County: +2.3%Maries County: +0.7%Bollinger County: +0.5%Clinton County: +2.4%Knox County: +0.0%Webster County: +7.8%Harrison County: +0.4%Pulaski County: -0.1%Adair County: +1.5%Warren County: +7.7%Daviess County: +1.3%Audrain County: -1.9%Howard County: -0.1%Linn County: +0.4%Saline County: -0.1%Miller County: +3.6%Dallas County: +4.3%Morgan County: +6.7%New Madrid County: -6.8%Newton County: +4.8%Oregon County: +1.0%Franklin County: +2.3%Greene County: +2.9%Ralls County: +1.4%Lafayette County: +1.4%Livingston County: +4.8%McDonald County: +3.3%Barry County: +3.1%Cape Girardeau County: +2.2%Carroll County: -0.6%Christian County: +7.6%Vernon County: +0.6%Carter County: +3.0%Andrew County: -0.1%Jasper County: +2.9%Worth County: -4.9%Lincoln County: +10.1%Marion County: -0.2%Holt County: +1.2%Howell County: +2.4%St. Francois County: +1.6%Chariton County: +0.1%Butler County: -0.6%Iron County: -1.0%Perry County: +0.7%Cass County: +5.3%St. Louis County: -1.0%Dunklin County: -4.3%Wayne County: -1.1%Ozark County: +6.7%Laclede County: +1.9%Reynolds County: -2.5%Lewis County: -1.9%Taney County: +1.2%Ripley County: +0.4%Ste. Genevieve County: +0.4%Scotland County: -0.1%Putnam County: -3.1%Schuyler County: +1.5%Shelby County: -2.8%Boone County: +4.4%Mercer County: -1.7%Platte County: +5.6%Camden County: +3.1%Bates County: +2.1%Johnson County: +3.4%Sullivan County: -3.8%Atchison County: -3.1%Scott County: -0.2%Montgomery County: +2.0%Jefferson County: +2.2%Clark County: -0.5%Callaway County: +1.8%St. Clair County: +5.4%Buchanan County: -1.1%Pemiscot County: -7.6%Polk County: +4.6%Phelps County: +2.5%Stone County: +4.6%Osage County: +1.7%Clay County: +3.6%Nodaway County: -2.4%Crawford County: -1.0%Jackson County: +1.4%St. Charles County: +4.3%Mississippi County: -3.1%Pike County: +3.1%Stoddard County: -0.7%Gasconade County: -0.7%DeKalb County: -14.8%
Change 2020 to 2024
  1. < -0.7%
  2. < +0.5%
  3. < +2.0%
  4. < +3.6%
  5. ≥ +3.6%
no data

Orange pin: Johnson County internal point. Dark pin: Jefferson City.

Internal point

Decimal
38.741500, -93.811900
DMS
38°44'29.40"N 93°48'42.84"W
UTM
15N 429440.5E 4288404.1N
Geohash
9yvk3k8m8
Plus code
86C8P5RQ+J6

Towns in Johnson County

3 incorporated places of 1,000+ people have residents in Johnson County, 25,239 people together, or 45% of the county. Each figure counts only the part of the town inside Johnson County; towns marked "part" extend into another county. The largest is Warrensburg with 19,998.

  1. 01Warrensburg19,998
  2. 02Knob Noster2,932
  3. 03Holden2,309
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Johnson County

The Census 2024 county adjacency file lists 5 neighbors for Johnson County. The most populous is Jackson County, MO, with 727,362 residents. Distances run between Census internal points in a straight line.

Distance to Jefferson City and the nearest big city

Jefferson City is 89.1 miles E of Johnson County's internal point in a straight line. The nearest place of 100,000 or more is Lee's Summit, MO (population 106,419), 33.2 miles away. The nearest place of 10,000 or more is Warrensburg, MO (population 19,998), 4.9 miles away.

Johnson County FIPS code

The FIPS code of Johnson County is 29101: state code 29 for Missouri plus county code 101. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $68,326.

Questions people ask

What is the population of Johnson County, Missouri?

The Census Vintage 2024 estimate for July 1, 2024 is 55,880. That is up 1,841 people (3.4%) from the July 2020 estimate of 54,039.

What is the FIPS code of Johnson County?

29101. The first two digits (29) are Missouri; the last three (101) identify the county.

What is the largest town in Johnson County?

Warrensburg, with 19,998 residents inside Johnson County in 2024.

Which counties border Johnson County?

5 county-equivalents border it in the Census 2024 adjacency file: Jackson County, MO; Cass County, MO; Pettis County, MO; Lafayette County, MO; Henry County, MO.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.