Editing Johnson County, Kansas (section)

==Demographics==
[[Image:USA Johnson County, Kansas age pyramid.svg|thumb|175px|left|[[Population pyramid]] based on 2000 census age data]]
{{US Census population
|1860= 4364
|1870= 13684
|1880= 16853
|1890= 17385
|1900= 18104
|1910= 18288
|1920= 18314
|1930= 21179
|1940= 33327
|1950= 62783
|1960= 143792
|1970= 220073
|1980= 270269
|1990= 357048
|2000= 451086
|2010= 544179
|2020= 609863
|estyear=2023
|estimate=622237
|estref=<ref>{{cite web|url=https://www.census.gov/programs-surveys/popest/data/tables.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023|publisher=United States Census Bureau|access-date=April 3, 2024}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=U.S. Decennial Census|publisher=United States Census Bureau|access-date=July 26, 2014}}</ref><br />1790-1960<ref>{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=July 26, 2014}}</ref> 1900-1990<ref>{{cite web|url=https://www.census.gov/population/cencounts/ks190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=July 26, 2014}}</ref><br />1990-2000<ref>{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-url=https://web.archive.org/web/20100327165705/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=March 27, 2010 |url-status=live|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|access-date=July 26, 2014}}</ref> 2010-2020<ref name="QF"/>
}}

Johnson County (county code '''JO''') is included in the [[Kansas City metropolitan area]]. The county has the highest [[median household income]] at $107,261 in 2019-2023 and the highest [[Per capita income|per-capita income]] in Kansas, with the 19th highest median household income in 2000 and the 46th highest per-capita income in 2005.{{Citation needed|date=May 2025}} 56.9 percent of residents have [[Bachelor's degree]] or [[Higher education in the United States|higher]] as of 2023 according the ''[[United States Census Bureau|U.S Census Bureau]]''.<ref>https://www.census.gov/quickfacts/fact/table/johnsoncountykansas/PST045224</ref>

===2010===
As of the [[2010 United States census|2010 census]], there were 544,179 people, 210,278 households, and 143,509 families residing in the county. The population density was {{convert|1,150|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 226,571 housing units at an average density of {{convert|381|/sqmi|/km2|sp=us|adj=off}}. The [[Race (United States Census)|racial makeup]] of the county was 86.0% [[White American|White]], 4.2% [[Asian American|Asian]], 4.3% [[Black American|Black]] or [[African American]], 0.4% [[Native Americans in the United States|Native American]], 0.01% [[Pacific Islander American|Pacific Islander]], 1.55% from other races, and 2.5% from [[Multiracial|two or more races]]. [[Hispanic]] or [[Hispanic and Latino Americans|Latino]] of any race were 7.2% of the population. 30.6% identified as of [[Germans|German]], 16.8% [[Irish people|Irish]], 13.6% [[English people|English]] and 5.7% [[United States|American]] ancestry.<ref name="factfinder2.census.gov">{{cite web|url=https://www.census.gov |publisher=[[United States Census Bureau]] |title=U.S. Census website |access-date=November 7, 2013}}</ref>

There were 210,278 [[household]]s, out of which 34.6% had children under the age of 18 living with them, 56.1% were [[Marriage|married couples]] living together, 8.4% had a female householder with no husband present, and 31.8% were non-families. 25.9% of all households were made up of individuals, and 7.8% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.05.<ref name="factfinder2.census.gov"/>

In the county, the population was spread out, with 26.3% under the age of 18, 7.60% from 18 to 24, 32.80% from 25 to 44, 22.50% from 45 to 64, and 10.9% who were 65 years of age or older. The median age was 36.4 years. 48.8% of the population were males and 51.2% of the population were females.

The [[Median household income|median income for a household]] in the county was $73,733, and the median income for a family was $90,380. Males had a median income of $61,346 versus $43,785 for females. The [[per capita income]] for the county was $37,882. About 3.6% of families and 5.5% of the population were below the [[poverty line]], including 7.1% of those under age 18 and 4.9% of those age 65 or over.<ref name="factfinder2.census.gov"/>

===2000===
As of the [[census]] of 2000, there were 451,086 people, 174,570 households, and 121,675 families residing in the county. The [[population density]] was {{convert|365|/km2|/mi2|abbr=on}}. There were 181,612 housing units at an average density of {{convert|147|/km2|/mi2|abbr=on}}. The racial makeup of the county was 91.11% [[Race (U.S. census)|White]], 2.61% [[Race (U.S. census)|Black]] or [[Race (U.S. census)|African American]], 0.33% [[Race (U.S. census)|Native American]], 2.83% [[Race (U.S. census)|Asian]], 0.03% [[Race (U.S. census)|Pacific Islander]], 1.55% from [[race (U.S. census)|other races]], and 1.54% from two or more races. 3.98% of the population were [[Race (U.S. census)|Hispanic]] or [[Race (U.S. census)|Latino]] of any race.

There were 174,570 households, out of which 36.00% had children under the age of 18 living with them, 59.20% were [[Marriage|married couples]] living together, 7.80% had a female householder with no husband present, and 30.30% were non-families. 24.50% of all households were made up of individuals, and 6.70% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.09.

In the county the population was spread out, with 27.10% under the age of 18, 7.60% from 18 to 24, 32.80% from 25 to 44, 22.50% from 45 to 64, and 10.00% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 95.50 males. For every 100 females age 18 and over, there were 92.00 males.

The median income for a household in the county was $61,455, and the median income for a family was $72,987. Males had a median income of $49,790 versus $32,145 for females. The [[per capita income]] for the county was $30,919. 3.40% of the population and 2.10% of families were below the [[poverty line]]. Out of the total population, 3.30% of those under the age of 18 and 3.60% of those 65 and older were living below the poverty line.