Gardner is home to 24,526 people in Kansas. The population has more than doubled since 2000, adding 15,130 people. This skews young, with a median age of 30.7. That puts it in the top 8% of US cities for household income. That is roughly 30% ahead of the Kansas median. Density works out to 2,008 people per square mile.
At a glance
Wealthier
median household income $96,818, above the US median
US median: $82,259
Younger
median age 30.7
US median: 38.9
Average education
32% hold a bachelor's degree
US average: 36%
Less affordable
home values up 54%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Gardner
What changed most since 1990
Population3,103 → 24,526(+690%)US over the same years: +35%
Median age33.3 → 30.7(−2.6 years)US over the same years: +6.0 years
Median home value (2024 dollars)$150,244 → $306,200(+104%)US over the same years: +67%
Gardner's population equals 4.0% of Johnson County's. Its number of adults with a bachelor's degree or higher equals 1.9% of the county's. Its number of residents 65 and older equals 2.1% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)40.9%(454)
US avg: 26.4%
Gulf War (1990s)30.6%(340)
US avg: 24.3%
Vietnam era18.4%(204)
US avg: 33.1%
Korean War1.9%(21)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 1,110 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Gardner, decade by decade
Gardner population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
3,103
$75,254
$150,244
12.2%
13.7
2000
9,396
$92,553
$198,196
22.9%
17.2
2010
19,123
$91,574
$230,027
31.3%
31.8
2020
23,287
$94,773
$243,741
35.0%
50.1
2024
24,526
$96,818
$306,200
32.0%
55.5
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
