O'Fallon, Missouri Population 2024

95,695

O'Fallon is a city located in St. Charles County Missouri. O'Fallon has a 2024 population of 95,695. O'Fallon is currently growing at a rate of 1.07% annually and its population has increased by 4.44% since the most recent census, which recorded a population of 91,631 in 2020.

The average household income in O'Fallon is $121,477 with a poverty rate of 4.53%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in O'Fallon is 38 years, 37.2 years for males, and 39 years for females.

O'Fallon Demographics

According to the most recent ACS, the racial composition of O'Fallon was:

  • White: 84.31%
  • Black or African American: 4.96%
  • Two or more races: 4.86%
  • Asian: 4.44%
  • Other race: 1.32%
  • Native American: 0.07%
  • Native Hawaiian or Pacific Islander: 0.04%
Land Area (mi²)
30.5 sq mi
Density (mi²)
3,135.0/sq mi
Growth Since 2020
4.44% (4,064)
The current population of O'Fallon, Missouri is 95,695 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 91,631.

O'Fallon, Missouri Population 2024

Population by Race

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Race
Population
Percentage (of total)
White77,42184.31%
Black or African American4,5544.96%
Two or more races4,4634.86%
Asian4,0764.44%
Other race1,2091.32%
Native American680.07%
Native Hawaiian or Pacific Islander340.04%

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

O'Fallon Population by Race

O'Fallon Population Pyramid 2024

O'Fallon Median Age

38

Total

37.2

Male

39

Female

O'Fallon Adults

There are 68,919 adults, (12,150 of whom are seniors) in O'Fallon.

O'Fallon Age Dependency

61.8

Age Dependency Ratio

21.4

Old Age Dependency Ratio

40.3

Child Dependency Ratio

O'Fallon Sex Ratio

Female46,86351.04%
Male44,96248.96%

O'Fallon Population by Age

O'Fallon Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All34,1742.6880.919.1
Married20,4213.2492.47.6
Non Family9,1431.2461.438.6
Female3,1423.1372.927.1
Male1,4682.8659.140.9

3.14

Average Family Size

2.68

Average Household Size

80.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

O'Fallon Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade1,0201.63%
9th to 12th Grade1,8492.96%
High School Graduate14,42723.09%
Some College13,34121.36%
Associates Degree5,3408.55%
Bachelors Degree17,05927.31%
Graduate Degree9,43415.1%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

O'Fallon Educational Attainment by Sex (over 25)

O'Fallon Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White53,12551,08122,019
Black3,0032,7511,307
Asian2,8282,5611,957
Hispanic2,0661,970723
2+ Races2,0061,867681
Other Race718565211
Native American515126
Islander20200

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 69.2%.

O'Fallon Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$61,520$72,221$51,466
Less Than 9th Grade$39,701$45,353$25,167
High School Graduate$45,169$54,628$35,557
Some College$49,277$61,556$41,296
Bachelors Degree$74,581$91,776$59,838
Graduate Degree$88,462$109,672$73,310

$61,520

Average Earnings

$72,221

Average Male

$51,466

Average Female

O'Fallon Earnings by Educational Attainment

O'Fallon Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

O'Fallon Language

93.45% of O'Fallon residents speak only English, while 6.55% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 2.59% of the population.

O'Fallon Language

O'Fallon Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White75,4122,7413.63%
Multiple4,46350711.36%
Hispanic4,00650312.56%
Black4,52146410.26%
Asian4,0642486.1%
Other1,209574.71%
Native6811.47%

4.53%

Overall Poverty Rate

3.69%

Male Poverty Rate

5.35%

Female Poverty Rate

Poverty in O'Fallon

The race most likely to be in poverty in O'Fallon is Hispanic, with 12.56% below the poverty level.

The race least likely to be in poverty in O'Fallon is Native, with 1.47% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.56%. Among those working part-time, it was 7.74%, and for those that did not work, the poverty rate was 9.23%.

O'Fallon Poverty

rate

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Rate
Poverty
Less Than 9th Grade7.08%
High School6.61%
Some College5.65%
Bachelors or Greater0.99%

O'Fallon Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed7.78%
Male Unemployed7.51%
Female Employed2.36%
Male Employed2.04%

O'Fallon Poverty Rate by Employment Status and Sex

O'Fallon Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$104,863$121,477
Families$122,413$138,453
Married Families$133,745$149,377
Non Families$52,530$69,419

mean

median

Income by Household Type

O'Fallon Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

58.0%

Overall Marriage Rate

61.0%

Male Marriage Rate

55.1%

Female Marriage Rate

O'Fallon Married by Age and Sex

male

female

O'Fallon Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

O'Fallon Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

O'Fallon Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,442

Number of Veterans

4,280

Male Veterans

162

Female Veterans

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War
Veterans
Vietnam1,526
First Gulf War1,081
Second Gulf War786
Korea165
World War II133

O'Fallon Veterans by War

count

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Age Group
Veterans
35 to 541,397
75+1,092
65 to 74992
55 to 64716
18 to 34245

O'Fallon Veterans by Age

count

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Name
Veterans
% of Total
White3,9936.72%
Black2949.12%
2+ Races1425.72%
Hispanic662.91%
Asian130.45%

O'Fallon Veterans by Race

O'Fallon Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.11%

Veteran Poverty Rate

22.42%

Veteran Disability Rate

O'Fallon Veterans by Education

LaborForceParticipation

73%

Labor Force Participation

70.7%

Employment Rate

3.1%

Unemployment Rate

O'Fallon Employment by Age

LaborForceParticipation

O'Fallon Employment by Race

LaborForceParticipation

O'Fallon 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

67.28%

Born in O'Fallon

94.6%

Native Born

5.4%

Foreign Born

2.21%

Non Citizen

3.19%

Naturalized

Place of Birth

94.6% of O'Fallon residents were born in the United States, with 67.28% having been born in Missouri. 2.21% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

O'Fallon Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029100,7751,0161.02%
202899,7591,0161.03%
202798,7431,0161.04%
202697,7271,0161.05%
202596,7111,0161.06%
202495,6951,0161.07%
202394,6791,0161.08%
202293,663-66-0.07%
202193,7292,0982.29%
202091,6313,0363.43%
201988,5952450.28%
201888,3508120.93%
201787,5381,0391.2%
201686,4991,4001.65%
201585,0998461%
201484,2531,0911.31%
201383,1621,0051.22%
201282,1579601.18%
201181,1971,2281.54%
201079,96933,80073.21%
200046,16927,471146.92%
199018,69810,021115.49%
19808,6771,65923.64%
19707,0183,24886.15%
19603,7703,170528.33%
194060000%
showing: 26 rows

O'Fallon Population by Year