Olathe, Kansas Population 2024

149,657

Olathe is a city located in Johnson County Kansas. Olathe has a 2024 population of 149,657. It is also the county seat of Johnson County. Olathe is currently growing at a rate of 1.37% annually and its population has increased by 5.71% since the most recent census, which recorded a population of 141,575 in 2020.

The average household income in Olathe is $126,598 with a poverty rate of 6.08%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Olathe is 36.3 years, 35.6 years for males, and 37.1 years for females.

In 1900, at the turn of the century and almost 40 years after Olathe’s incorporation, the population stood at 3,451. This kept relatively stagnant over the decades that followed due to the town’s relative obscurity and insignificance.

By the end of the 1940s, Olathe had seen a 6% increase in the population, bringing it up to just shy of 11,000 in 1960. This continued to rise further, seeing an increase of almost 7,000 people by 1970, and an additional 19,000 people by the end of the decade.

These numbers have continued to steadily rise each year by year, and this growth can be mainly attributed to the construction of the Interstate Highway, bringing Olathe’s proximity and access to and from nearby Kansas City ever closer, and making it more accessible for surrounding towns and cities.

While Olathe's population is just over 137,000 in 2019, some estimates peg its population at 300,000 within 20 years (https://fox4kc.com/2018/09/17/olathe-police-finding-officer-recruitment-a-struggle-as-city-grows/)."

The town of Olathe was founded in 1857, getting its name from the Shawnee word for "beautiful.” It was incorporated later in the same year, and despite not being the first city in the county, it was named county seat in October of 1859, due in no small part to its rapid growth.

After being the site of much activity during the American Civil War, Olathe went on to become a major stop on the California Trail, the Oregon Trail and the Santa Fe Trail. Catering to travelers moving along these paths became the primary income source for local businesses. Once the construction of the Transcontinental Railroad saw completion, however, these westward trails lost significance, and Olathe withered into obscurity.

The construction of the Interstate Highway system in the 1950s saw Olathe linked to neighboring Kansas City, resulting in tremendous residential growth and Olathe becoming part of the Kansas City metropolitan area. The 1980s saw even more of a boom in population growth due to tremendous commercial development.

By 2001, Olathe’s population surpassed 100,000, and in 2008 Olathe was ranked the 24th fastest growing city in the United States. Olathe was voted in the same year by CNN and Money and Money magazine as the 11th best city in which to live in the United States.

Olathe Demographics

According to the most recent ACS, the racial composition of Olathe was:

  • White: 81.29%
  • Two or more races: 7%
  • Black or African American: 5.17%
  • Asian: 4.12%
  • Other race: 2.25%
  • Native American: 0.16%
  • Native Hawaiian or Pacific Islander: 0.01%
State
Kansas
Land Area (mi²)
62.5 sq mi
Density (mi²)
2,396.30/sq mi
Growth Since 2020
5.71% (8,082)
The current population of Olathe, Kansas is 149,657 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 141,575.

Olathe, Kansas Population 2024

Population by Race

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Race
Population
Percentage (of total)
White115,52481.29%
Two or more races9,9417%
Black or African American7,3475.17%
Asian5,8554.12%
Other race3,2032.25%
Native American2300.16%
Native Hawaiian or Pacific Islander140.01%

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Olathe Population by Race

Olathe Population Pyramid 2024

Olathe Median Age

36.3

Total

35.6

Male

37.1

Female

Olathe Adults

There are 104,046 adults, (17,940 of whom are seniors) in Olathe.

Olathe Age Dependency

65

Age Dependency Ratio

20.8

Old Age Dependency Ratio

44.2

Child Dependency Ratio

Olathe Sex Ratio

Female71,37350.22%
Male70,74149.78%

Olathe Population by Age

Olathe Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All51,0212.7573.526.5
Married30,5163.388.511.5
Non Family13,0601.2950.349.7
Female5,1282.995050
Male2,3173.2559.940.1

3.17

Average Family Size

2.75

Average Household Size

73.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Olathe Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade2,0182.18%
9th to 12th Grade2,8863.12%
High School Graduate14,81116.03%
Some College18,10119.59%
Associates Degree7,5878.21%
Bachelors Degree29,33531.75%
Graduate Degree17,66819.12%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Olathe Educational Attainment by Sex (over 25)

Olathe Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White72,69170,93140,175
Hispanic8,6406,1801,735
2+ Races4,6133,9371,495
Black4,4254,1291,564
Asian4,0713,7432,269
Other Race1,8801,474633
Native American17117171
Islander13130

The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 55.74%.

Olathe Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$59,124$72,151$47,316
Less Than 9th Grade$31,875$37,312$24,848
High School Graduate$40,377$48,063$30,704
Some College$50,630$62,415$37,272
Bachelors Degree$72,133$89,078$55,189
Graduate Degree$82,672$102,241$70,819

$59,124

Average Earnings

$72,151

Average Male

$47,316

Average Female

Olathe Earnings by Educational Attainment

Olathe Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Olathe Language

85.1% of Olathe residents speak only English, while 14.9% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 8.19% of the population.

Olathe Language

Olathe Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White105,3034,6404.41%
Hispanic16,4062,30814.07%
Multiple9,8411,14811.67%
Black7,0826929.77%
Other3,17733710.61%
Asian5,7903355.79%
Native2263013.27%

6.08%

Overall Poverty Rate

5.42%

Male Poverty Rate

6.73%

Female Poverty Rate

Poverty in Olathe

The race most likely to be in poverty in Olathe is Hispanic, with 14.07% below the poverty level.

The race least likely to be in poverty in Olathe is White, with 4.41% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.42%. Among those working part-time, it was 9.04%, and for those that did not work, the poverty rate was 13.42%.

Olathe Poverty

rate

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Rate
Poverty
Less Than 9th Grade20%
High School8.84%
Some College5.22%
Bachelors or Greater2.34%

Olathe Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed24.26%
Male Unemployed15.33%
Female Employed3.3%
Male Employed2.99%

Olathe Poverty Rate by Employment Status and Sex

Olathe Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$108,077$126,598
Families$118,875$140,325
Married Families$132,929$155,912
Non Families$61,074$79,764

mean

median

Income by Household Type

Olathe Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

57.9%

Overall Marriage Rate

59.6%

Male Marriage Rate

56.2%

Female Marriage Rate

Olathe Married by Age and Sex

male

female

Olathe Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Olathe Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Olathe Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

5,529

Number of Veterans

5,171

Male Veterans

358

Female Veterans

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War
Veterans
First Gulf War1,924
Vietnam1,814
Second Gulf War1,173
Korea337
World War II87

Olathe Veterans by War

count

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Age Group
Veterans
35 to 541,868
65 to 741,418
75+1,087
55 to 64839
18 to 34317

Olathe Veterans by Age

count

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Name
Veterans
% of Total
White4,8765.7%
Hispanic4264%
2+ Races2814.94%
Black2404.66%
Other Race994.07%
Asian220.48%
Native American84.21%
Islander323.08%

Olathe Veterans by Race

Olathe Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.52%

Veteran Poverty Rate

23.95%

Veteran Disability Rate

Olathe Veterans by Education

LaborForceParticipation

73.6%

Labor Force Participation

70.9%

Employment Rate

3.2%

Unemployment Rate

Olathe Employment by Age

LaborForceParticipation

Olathe Employment by Race

LaborForceParticipation

Olathe Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

46.48%

Born in Olathe

89.44%

Native Born

10.56%

Foreign Born

5.19%

Non Citizen

5.37%

Naturalized

Place of Birth

89.44% of Olathe residents were born in the United States, with 46.48% having been born in Kansas. 5.19% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Olathe Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029159,7592,0201.28%
2028157,7392,0211.3%
2027155,7182,0201.31%
2026153,6982,0211.33%
2025151,6772,0201.35%
2024149,6572,0211.37%
2023147,6362,0201.39%
2022145,6162,1891.53%
2021143,4271,8521.31%
2020141,5759270.66%
2019140,6486990.5%
2018139,9492,2711.65%
2017137,6781,6381.2%
2016136,0401,6561.23%
2015134,3841,4801.11%
2014132,9041,0570.8%
2013131,8471,8561.43%
2012129,9911,6591.29%
2011128,3322,0791.65%
2010126,25333,29135.81%
200092,96229,61046.74%
199063,35226,09470.04%
198037,25819,341107.95%
197017,9176,93063.07%
196010,9875,39496.44%
19505,5931,61440.56%
19403,9793238.83%
19303,65638811.87%
19203,268-4-0.12%
19103,272-179-5.19%
19003,4511574.77%
18903,29400%
showing: 32 rows

Olathe Population by Year