Johnson County, Kansas
Johnson County: county in Wyoming, United States
About
Johnson County is a county located in the U.S. state of Kansas. As of the 2010 census, the population was 544,179 and a population density of 50 people per km². After 10 years in 2020 county had an estimated population of 607,220 inhabitants. Its county seat is Buffalo. The county was created 150 years ago in 1875.
County Snapshot
Johnson County at a glance
Johnson County currently has 22 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
22
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Kansas counties
105
Open related pagesLargest city
Overland ParkPopulation 197,381
Top linked places
Quick Facts about Johnson County
| Population | 607,220 (2020) |
| Country | United States of America |
| State | Kansas (United States) |
| Different from | Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County, Johnson County |
| Area | 10812 km2 |
| Water as percent of area | 0.5% |
| Land as percent of area | 99.5% |
| Latitude & Longitude | 38.8838,-94.8223 |
| Named for | E. P. Johnson, E. L. Pease |
| Altitude | 1,014 feet / 309 meters |
| Capital | Buffalo |
| Time Zone | America/Chicago |
| Local time | 22:24:34 (16th April 2026) |
| Density | 56 Pop. per km² as of 2020 |
| Population growth | 10.38% (2010-2020) |
Geography
Johnson County is located at 38°53'2"N 94°49'20"W (38.8837600, -94.8222600). It has 6 neighbors: Campbell County, Big Horn County, Converse County, Natrona County, Sheridan County and Washakie County.
Johnson County map
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The largest city of Johnson County is Overland Park with a population of 197,381. Other cities include, Shawnee population 66,298, Lenexa population 56,156, Leawood population 34,669 and Prairie Village population 21,877. See all Johnson County cities & populated places.
Johnson County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Johnson County.
| City Name | Population | Title |
|---|---|---|
| Overland Park | 197,381 | The second most populous city in Johnson County, Kansas. |
| Shawnee | 66,298 | The most populous city in Johnson County, Kansas. |
| Lenexa | 56,156 | The most populous city in Johnson County, Kansas. |
| Leawood | 34,669 | City in Kansas, United States |
| Prairie Village | 21,877 | City in Kansas, United States |
| Merriam | 11,128 | City in Johnson County, Kansas, United States |
| Mission | 9,873 | City in Kansas, USA |
| Roeland Park | 6,652 | City in Johnson County, Kansas, United States |
| De Soto | 6,648 | City in Kansas, United States of America |
| Aubry | 4,531 | Township in Johnson County, Kansas |
| Fairway | 3,963 | City in Johnson County, Kansas, United States of America |
| Mission Hills | 3,533 | Census-designated place in Santa Barbara County, California |
| Spring Hill | 3,316 | City in Kansas, USA |
| Gardner | 2,941 | City in Kansas, United States |
| Edgerton | 1,773 | City in Kansas, United States |
| Westwood | 1,642 | City in Kansas |
Official website of Johnson County
Official Website- Buffalo
Demographics
The population of Johnson County increased by 10.38% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 544,179 | - | census |
| 2011 | 552,907 | 1.58% | estimation process |
| 2012 | 559,428 | 1.17% | estimation process |
| 2013 | 566,351 | 1.22% | estimation process |
| 2014 | 572,940 | 1.15% | estimation process |
| 2015 | 579,684 | 1.16% | estimation process |
| 2016 | 586,015 | 1.08% | estimation process |
| 2017 | 591,305 | 0.89% | estimation process |
| 2018 | 598,127 | 1.14% | estimation process |
| 2019 | 602,401 | 0.71% | estimation process |
| 2020 | 607,220 | 0.79% | estimation process |
Other places with the same name (11)
- Johnson County, Texas county in Texas, United States with a population of 179,575 people.
- Johnson County, Indiana county in Indiana, United States with a population of 160,607 people.
- Johnson County, Iowa county in Iowa, United States with a population of 153,740 people.
- Johnson County, Missouri county in Missouri, United States with a population of 54,219 people.
- Johnson County, Arkansas county in Arkansas, United States with a population of 26,513 people.
- Johnson County, Kentucky county in Kentucky, United States with a population of 22,002 people.
- Johnson County, Tennessee county in Tennessee, United States with a population of 17,849 people.
- Johnson County, Illinois county in Illinois, United States with a population of 12,358 people.
- Johnson County, Georgia county in Georgia, United States with a population of 9,667 people.
- Johnson County, Wyoming county in Wyoming, United States with a population of 8,588 people.
- Johnson County, Nebraska county in Nebraska, United States with a population of 5,057 people.
Kansas Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Sedgwick County | 519,907 | County in Kansas, United States |
| Wichita | 391,731 | The largest city in Kansas and the center of the Wichita metropolitan area. |
| Overland Park | 197,381 | The second most populous city in Johnson County, Kansas. |
| Shawnee County | 175,999 | County in Kansas, United States |
| Wyandotte County | 165,265 | County in Kansas, United States |
| Kansas City | 152,960 | The second most populous city in Kansas. |
| Douglas County | 122,530 | County in Kansas, United States |
| Leavenworth County | 82,246 | County in Kansas, United States |
| Riley County | 73,202 | County in Kansas, United States |
| Butler County | 66,992 | County in Kansas, United States of America |
| Shawnee | 66,298 | The most populous city in Johnson County, Kansas. |
| Reno County | 61,793 | County in Kansas, United States |
| Lenexa | 56,156 | The most populous city in Johnson County, Kansas. |
| Saline County | 53,926 | County in Kansas, United States |
| Salina | 46,274 | The most populous city in Saline County, Kansas. |
| Hutchinson | 40,209 | The county seat of Reno County, Kansas. |