Olathe Flag

Olathe

County:
Johnson County
County Seat:
Yes
Area (mi²):
62.453
State:
Kansas

Olathe is a city located in Johnson County, Kansas. Olathe has a 2025 population of 149,035 . It is also the county seat of Johnson County . Olathe is currently growing at a rate of 1.28% annually and its population has increased by 5.28% since the most recent census, which recorded a population of 141,560 in 2020.

The median household income in Olathe is $112,232 with a poverty rate of 5.59%. The median age in Olathe is 36.6 years: 35.7 years for males, and 37.4 years for females. For every 100 females there are 100.1 males.

149K
Total Population
2,386
Density (mi²)
1.9K 1.28%
Growth

Olathe Population

Olathe Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Olathe includes 78.62% White, 4.85% Black or African American, 4.18% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White (78.62%)

Two or more races (9.59%)

Black or African American (4.85%)

Asian (4.18%)

Other race (2.56%)

Native American (0.2%)

Native Hawaiian or Pacific Islander (0.01%)

Race
Population
Percentage (of total)
White112,99078.62%
Two or more races13,7849.59%
Black or African American6,9684.85%
Asian6,0044.18%
Other race3,6752.56%
Native American2820.2%
Native Hawaiian or Pacific Islander170.01%

Olathe Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Olathe's average per capita income is $61,881. Household income levels show a median of $112,232. The poverty rate stands at 5.59%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$141,487-
Families$126,260$148,049
Households$112,232$132,745
Non Families$62,911$83,947

$61,881

Average Income

$112,232

Median Household Income

5.59%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)