Gardner is a city located in Johnson County, Kansas. Gardner has a 2025 population of 26,438 . Gardner is currently growing at a rate of 2.33% annually and its population has increased by 12.85% since the most recent census, which recorded a population of 23,428 in 2020.
The average household income in Gardner is $105,962 with a poverty rate of 7.14%. The median age in Gardner is 31.3 years: 30.9 years for males, and 31.9 years for females. For every 100 females there are 100.0 males.
Data after 2023 is projected based on recent change
The racial composition of Gardner includes 79.76% White, 7.12% Black or African American, 3.82% other race, and smaller percentages for Asian, Native American and multiracial populations.
White (79.76%)
Two or more races (7.71%)
Black or African American (7.12%)
Other race (3.82%)
Asian (1.42%)
Native American (0.18%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 19,159 | 79.76% |
| Two or more races | 1,851 | 7.71% |
| Black or African American | 1,710 | 7.12% |
| Other race | 917 | 3.82% |
| Asian | 340 | 1.42% |
| Native American | 43 | 0.18% |
Married
Widowed
Divorced
Separated
Never Married
Gardner's average per capita income is $56,420. Household income levels show a median of $92,579. The poverty rate stands at 7.14%.
Name | Median | Mean |
|---|---|---|
| Married Families | $120,097 | - |
| Families | $105,180 | $121,147 |
| Households | $92,579 | $105,962 |
| Non Families | $49,044 | $61,405 |
Average Income
Median Household Income
Poverty Rate