O'Fallon, Illinois Population 2022

33,091
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O'Fallon is a city located in Illinois. O'Fallon has a 2020 population of 33,091. O'Fallon is currently growing at a rate of 1.23% annually and its population has increased by 2.48% since the most recent census, which recorded a population of 32,289 in 2010.

The average household income in O'Fallon is $105,152 with a poverty rate of 3.98%. The median rental costs in recent years comes to $1,134 per month, and the median house value is $214,600. The median age in O'Fallon is 36.7 years, 35.5 years for males, and 38 years for females.

O'Fallon Demographics

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

  • White: 79.11%
  • Black or African American: 10.16%
  • Two or more races: 5.12%
  • Asian: 3.77%
  • Other race: 1.77%
  • Native American: 0.07%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of O'Fallon, Illinois is 33,091 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 32,289.

O'Fallon, Illinois Population 2022

Population by Race

Race Population Percentage
White23,32779.11%
Black or African American2,99510.16%
American Indian and Alaska Native210.07%
Asian1,1133.77%
Some Other Race5221.77%
Two or More Races1,5095.12%
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O'Fallon Population by Race

O'Fallon Population Pyramid 2022

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O'Fallon Median Age

37.7


Total

36.6


Male

38.7


Female

O'Fallon Adults

There are 21,747 adults, (4,577 of whom are seniors) in O'Fallon.

O'Fallon Age Dependency

Age Dependency Ratio

26.7

Old Age Dependency Ratio

45.1

Child Dependency Ratio

O'Fallon Sex Ratio

Female

15,379

52.16%

Male

14,108

47.84%

O'Fallon Population by Age

O'Fallon Renter vs Owner Occupied by Household Type

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O'Fallon Household Types

Type Owner Renter
Married88.5%11.5%
All71.8%28.2%
Male70.5%29.5%
Female48.8%51.2%
Non Family43.4%56.6%

71.8%

Rate of Home Ownership

O'Fallon Households and Families

Type Count Average Size Owned
All11,4932.5771.8
Married6,7953.0388.5
Male4913.2270.5
Female1,3113.248.8
Non Family2,8961.0843.4

3

Average Family Size

2.57

Average Household Size

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O'Fallon Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2731.36%
9th to 12th Grade3061.53%
High School Graduate3,15815.78%
Some College4,01520.06%
Associates Degree2,31911.58%
Bachelors Degree5,67128.33%
Graduate Degree4,27721.36%
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O'Fallon Educational Attainment by Sex (over 25)

O'Fallon Educational Attainment by Race

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Race Total High School Bachelors
Asian765635457
White15,82015,4938,242
2+ Races592577262
Black2,0341,976747
Hispanic821762273
Other Race31331378
Native American21211

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 59.74%.

O'Fallon Educational Attainment by Race

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Name Average Male Female
Overall$53,930$70,014$44,214
Less Than 9th Grade$30,972$32,763$30,833
High School Graduate$37,469$47,950$33,639
Some College$42,259$50,225$31,350
Bachelors Degree$60,115$74,408$50,556
Graduate Degree$92,125$108,443$66,313

$53,930

Average Earnings

$70,014

Average Male

$44,214

Average Female

O'Fallon Earnings by Educational Attainment

O'Fallon Language by Age

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O'Fallon Language

92.21% of O'Fallon residents speak only English, while 7.79% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.96% of the population.

O'Fallon Language

O'Fallon Poverty by Race

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Name Total In Poverty Poverty Rate
Black2,9792508.39%
Multiple1,469694.70%
White22,4168313.71%
Asian1,113171.53%
OtherNaN%
Hispanic1,411281.98%

3.98%

Overall Poverty Rate

3.82%

Male Poverty Rate

4.11%

Female Poverty Rate

Poverty in O'Fallon

The race most likely to be in poverty in O'Fallon is Black, with 8.39% below the poverty level.

The race least likely to be in poverty in O'Fallon is Hispanic, with 1.98% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.36%. Among those working part-time, it was 8.62%, and for those that did not work, the poverty rate was 4.27%.

O'Fallon Poverty

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Name Poverty
Less Than 9th Grade2.07%
High School5.95%
Some College3.98%
Bachelors or Greater2.53%

O'Fallon Poverty Rate by Education

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Rate Poverty
Male Employed2.23%
Male Unemployed17.42%
Female Employed4.00%
Female Unemployed21.98%

O'Fallon Poverty Rate by Employment Status and Sex

O'Fallon Income by Household Type

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Name Median Mean
Households$90,432$110,263
Families$108,467$126,538
Married Families$125,162-
Non Families$51,406$57,763
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Income by Household Type

O'Fallon Marital Status

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Marriage Rates

61.6%

Overall Marriage Rate

64.4%

Male Marriage Rate

59.0%

Female Marriage Rate

O'Fallon Married by Age and Sex

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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 55-64.

O'Fallon Marital Status by Race

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O'Fallon Marital Status

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4,137

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War1,773
First Gulf War2,102
Vietnam1,222
Korea304
World War II9

O'Fallon Veterans by War

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Age Group Veterans
18 to 34441
35 to 541,418
55 to 64739
65 to 74943
75+596

O'Fallon Veterans by Age

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Name Veterans % of Total
White3,44820.33%
Black44619.90%
Native American1047.62%
Asian182.28%
2+ Races21529.70%
Hispanic364.07%

O'Fallon Veterans by Race

O'Fallon Veterans by Education

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1.16%

Veteran Poverty Rate

15.49%

Veteran Disability Rate

O'Fallon Veterans by Education

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68.5%

Labor Force Participation

62.9%

Employment Rate

3.5%

Unemployment Rate

O'Fallon Employment by Age

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O'Fallon Employment by Race

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O'Fallon Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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47.79%

Born in O'Fallon

95.39%

Native Born

4.61%

Foreign Born

1.65%

Non Citizen

2.96%

Naturalized

Place of Birth

95.39% of O'Fallon residents were born in the United States, with 47.79% having been born in Illinois. 1.65% 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: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
19503,0220.00%
19604,0189962.89%
19707,2683,2506.11%
198012,1734,9055.29%
199016,0733,9002.82%
200021,9105,8373.15%
201028,2816,3712.59%
201128,6824011.42%
201229,0834011.40%
201329,4844011.38%
201429,8854011.36%
201530,2864011.34%
201630,6874011.32%
201731,0884011.31%
201831,4894011.29%
201931,8904011.27%
202032,2893991.25%
202132,6904011.24%
202233,0914011.23%

O'Fallon Population by Year