O'Fallon is a city located in Missouri. With a 2023 population of 94,913, it is the 7th largest city in Missouri and the 379th largest city in the United States.O'Fallon is currently growing at a rate of 1.28% annually and its population has increased by 3.94% since the most recent census, which recorded a population of 91,316 in 2020. Spanning over 30 miles, O'Fallon has a population density of 3,187 people per square mile.
The average household income in O'Fallon is $108,521 with a poverty rate of 5.79%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in O'Fallon is 37.5 years, 35.7 years for males, and 39.5 years for females.
According to the most recent ACS, the racial composition of O'Fallon was:
White
Black or African American
Asian
Two or more races
Other race
Native American
Native Hawaiian or Pacific Islander
3.2
Average Family Size
2.77
Average Household Size
82.7%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among islander people with a rate of 100%.
The highest rate of bachelors degrees is among asian people with a rate of 65.91%.
All
Male
Female
$53,070
Average Earnings
$65,199
Average Male
$41,851
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
94.22% of O'Fallon residents speak only English, while 5.78% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 2.99% of the population.
rate
5.79%
Overall Poverty Rate
3.78%
Male Poverty Rate
5.36%
Female Poverty Rate
The race most likely to be in poverty in O'Fallon is Multiple, with 32.31% below the poverty level.
The race least likely to be in poverty in O'Fallon is White, with 4.41% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.65%. Among those working part-time, it was 8.79%, and for those that did not work, the poverty rate was 8.7%.
rate
rate
Households
Families
MarriedFamilies
NonFamilies
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
57.9%
Overall Marriage Rate
60.0%
Male Marriage Rate
55.9%
Female Marriage Rate
male
female
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.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
4,422
Number of Veterans
4,186
Male Veterans
236
Female Veterans
count
count
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
3.05%
Veteran Poverty Rate
25.96%
Veteran Disability Rate
LaborForceParticipation
72.9%
Labor Force Participation
70.6%
Employment Rate
3%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
Europe
Asia
Africa
Oceania
Latin America
North America
67.22%
Born in O'Fallon
92.14%
Native Born
4.37%
Foreign Born
1.85%
Non Citizen
2.52%
Naturalized
92.14% of O'Fallon residents were born in the United States, with 67.22% having been born in Missouri. 1.85% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.