Johnson County, MO Demographics
Johnson County, MO is the 21st most populous of 115 counties in Missouri, with 54,013 residents across 829 square miles. That is about 65 people per square mile.
At the 2020 census
| Population | 54,013 |
|---|---|
| Land area | 829 sq mi |
| Density | 65 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Johnson County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Johnson County, MO
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Johnson County, MO — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Johnson County, MO
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9603.01 | 6,057 | 61.3 | 99 |
| Census Tract 9601.01 | 5,957 | 106.9 | 56 |
| Census Tract 9602 | 5,259 | 90.4 | 58 |
| Census Tract 9609 | 4,761 | 273.3 | 17 |
| Census Tract 9605.02 | 4,136 | 3.5 | 1,171 |
| Census Tract 9603.02 | 3,841 | 90.3 | 43 |
| Census Tract 9605.01 | 3,477 | 2.0 | 1,723 |
| Census Tract 9604.01 | 3,310 | 0.4 | 7,860 |
| Census Tract 9606 | 3,299 | 2.4 | 1,403 |
| Census Tract 9601.02 | 3,185 | 146.3 | 22 |
| Census Tract 9607.02 | 2,918 | 38.6 | 76 |
| Census Tract 9800 | 2,896 | 6.7 | 433 |
| Census Tract 9604.02 | 2,821 | 2.4 | 1,186 |
| Census Tract 9607.01 | 2,096 | 4.9 | 426 |
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Metro areas containing Johnson County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.