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Living in
O'Fallon.
About
Life in O'Fallon
If you're considering O'Fallon, you're looking at a solidly middle to upper-middle class suburb that's really geared toward families and professionals working in the St. Louis area. The commute to downtown is reasonable at about 26 minutes on average, and you're close enough to Scott Air Force Base that many residents work there—that's a big employment anchor for the region.
O'Fallon at a Glance
Population, income, housing and more
Median Age
37.8 yrs
Poverty Rate
6.2%
Foreign-Born
3.8%
Broadband Internet
94.5%
of households
Population Growth
+0.7%
recent change · Census Bureau
Median household income
Demographics3.8% foreign-born, most often from Philippines
Who lives in O'Fallon: race and ethnicity, ages, households, languages and countries of origin
In O'Fallon, the largest foreign-born group is from Philippines (14.2%), and 2.1% of residents speak Spanish at home.
Under 18
26.2%
of residents
65 and Older
16.7%
of residents
Households with Kids
36.0%
anyone under 18
Living Alone
24.8%
of households
Married Couples
56.1%
of households
Avg Household Size
2.52
people
Race & Ethnicity
Hispanic or Latino of any race; other groups are non-Hispanic
Top countries of origin (foreign-born)
Languages Spoken at Home
Cost of Livingrent about average for IL
Rent, home values, and income in O'Fallon
In O'Fallon, home values are 12% above the IL average.
Median rent (per month)
Median home value
Rent Burdened
45.5%
spending 30%+ of income on rent
Severely Rent Burdened
32.4%
spending 50%+
Cost of Living Index
95.1
metro area (BEA) · US avg = 100
Median Property Tax
$5,827
per year, owner-occupied homes
Homeowners
70.2%
of occupied homes are owned
Typical Home Built
1997
median year built
Vacant Homes
5.3%
of housing units
Home Value Trend
Latest: $314,564 (September 2026)
Jobs & Economyunemployment 0.8 pts below IL average
Unemployment in O'Fallon and typical pay across the metro area
Unemployment in O'Fallon is 0.8 percentage points lower than the IL average.
Unemployment rate
City-level rate · BLS annual average
Unemployment Rate — 10 Year Trend
City-level (BLS) · Annual averages
What O'Fallon Residents Do for Work · share of employed residents by industry
City residents, wherever they work
Median Salary by Occupation · metro area
St. Louis, MO-IL metro area
Commute25.3 min avg
How O'Fallon residents get to work, and the nearest airports
In O'Fallon, most residents drive alone to work (71%), and 67% get there in under 30 minutes.
How People Get to Work
Commute Time Distribution
Nearest airports · with airline service
- 5 mi
Scott AFB/Midamerica Airport (BLV)
Regional airport · few flights193k passengers boarded in 2025
- 27 mi
St. Louis Lambert International Airport (STL)
Medium hub7.5M passengers boarded in 2025
Straight-line distance. Size is the FAA’s hub category, based on passenger traffic: regional airports may have only a few flights a day.
Safetyviolent crime 57% below national average
Crime rates for 2025
Violent crime in O'Fallon runs 57% below the national average.
Violent Crime Rate
140.2
per 100,000 residents
Below average (329 national, 2025)
Property Crime Rate
921.9
per 100,000 residents
Below average (1,552 national, 2025)
O'Fallon Police Department
Natural DisastersThunderstorm Wind most common — 20 events in 2025
Natural hazard risk, storms and earthquakes
FEMA National Risk Index
Relatively High
94.9 / 100
Compares expected losses from natural hazards, social vulnerability and community resilience against every US county (higher = more risk).
St. Clair County, county-wide · FEMA NRI December 2025
In St. Clair County, which includes O'Fallon, the most common type is thunderstorm wind, with 20 recorded events in 2025.
Most common events:
Storm events by year
| Year | Events | Top Type | Property Damage |
|---|---|---|---|
| 2025 | 20 | Thunderstorm Wind | $770,000 |
| 2024 | 9 | Hail | $80,500 |
| 2023 | 25 | Thunderstorm Wind | $40,000 |
| 2022 | 13 | Thunderstorm Wind | $10.2M |
| 2021 | 8 | Thunderstorm Wind | $91,000 |
| 2020 | 7 | Thunderstorm Wind | None reported |
| 2019 | 21 | Thunderstorm Wind | $8.1M |
| 2018 | 13 | Thunderstorm Wind | None reported |
Property damage is the National Weather Service's estimate filed with each event. “None reported” means the events were logged with $0 damage; “Not estimated” means no estimate was filed. Storms covering several counties aren't counted here, since NOAA doesn't split their damage by county.
1 earthquake of magnitude 2.5+ within 100 miles in the past year
St. Clair County, county-wide
Air Quality49 median AQI — Good
Days by air quality category (2025)
Air quality in Madison County, IL (the nearest EPA-monitored county, about 16 miles from O'Fallon) is typically good — 191 good-air days per year.
Median AQI
49
Good Days
191
per year
Moderate Days
170
per year
Unhealthy Days
1
per year
Nearest EPA monitor county: Madison County, IL (16 mi away)
Climate89°F summers, 27°F winters
30-year climate averages (1991–2020) — monthly temperatures and precipitation
O'Fallon has warm summers (avg high 89°F) and cold winters (avg low 27°F).
Spring (Mar–May)
70°/46°F
avg high / low
Summer (Jun–Aug)
89°/66°F
avg high / low
Fall (Sep–Nov)
71°/47°F
avg high / low
Winter (Dec–Feb)
46°/27°F
avg high / low
Annual Precipitation
43.6"
Annual Snowfall
11.2"
Hot Days/Year
53
days above 90°F
Freeze Days/Year
94
days below 32°F
Rainy Days/Year
100
Average month
Show month-by-month table ↓Hide table ↑
| Month | High | Low | Precip |
|---|---|---|---|
| Jan | 43°F | 24°F | 2.56" |
| Feb | 49°F | 28°F | 2.16" |
| Mar | 59°F | 36°F | 3.44" |
| Apr | 71°F | 46°F | 4.90" |
| May | 79°F | 56°F | 5.05" |
| Jun | 87°F | 65°F | 4.62" |
| Jul | 90°F | 68°F | 4.03" |
| Aug | 89°F | 65°F | 3.92" |
| Sep | 83°F | 57°F | 3.35" |
| Oct | 73°F | 47°F | 3.12" |
| Nov | 58°F | 37°F | 3.60" |
| Dec | 46°F | 28°F | 2.61" |
Healthcare1 hospital, avg 4.0/5
Hospitals, ratings, and health insurance in O'Fallon
O'Fallon has 1 hospital, averaging 4.0 out of 5 on CMS's quality rating — above-average care.
Hospitals
1
within city limits
Uninsured
4.0%
of residents
Avg Hospital Rating
4.0 / 5
Hshs St Elizabeth's Hospital
Acute Care Hospitals · ER available
Nearby hospitals · within 15 miles
Memorial Hospital
Acute Care Hospitals · ER available · 6.6 mi away · Belleville
Anderson Hospital
Acute Care Hospitals · ER available · 9.9 mi away · Maryville
Touchette Regional Hospital Inc.
Acute Care Hospitals · ER available · 10.6 mi away · Centreville
Adult Health · vs. the typical US place
Share of adults. Modeled estimates, not counted cases. “US” = the typical US place.
Medicare-certified hospitals only. Doesn’t include clinics, urgent care, or freestanding ERs.
Education16.8:1 student/teacher ratio
Schools and degree attainment in O'Fallon
O'Fallon's student/teacher ratio is 16.8:1 (higher than the national average of 16:1), and 52.4% of adults 25+ hold a bachelor's degree or higher.
Public Schools
10
within city limits
Private Schools
2
within city limits
College Degree Rate
52.4%
adults 25+ with bachelor's or higher
Student/Teacher Ratio
16.8:1
National avg 16:1
Schools located within city limits (2023) — school-level metrics change slowly year to year
Colleges Near O'Fallon (within 15 miles)
Southern Illinois University Edwardsville
14.3 mi awayPublic · 4-year · 8,750 students · in-state tuition $13,299 · 61% graduate · median earnings $59,436 (10 yrs after entry)
Degree-granting colleges with 100+ students, placed by campus location (main campuses only — branch campuses are reported under their parent school)
Parks & Recreationclosest: Gateway Arch National Park, 15 mi
Nearby national parks, recreation areas and public libraries for O'Fallon
O'Fallon has 6 nearby national parks or recreation areas, closest being Gateway Arch National Park (15 mi away).
Nearby National Parks & Recreation Areas
Gateway Arch National Park
National Park
15 mi awayUlysses S Grant National Historic Site
National Historic Site
24 mi awaySte. Geneviève National Historical Park
National Historical Park
43 mi awayLincoln Home National Historic Site
National Historic Site
84 mi awaySpringfield 1908 Race Riot National Monument
National Monument
85 mi awayNew Philadelphia National Historic Site
National Historic Site
94 mi awayPublic Libraries in O'Fallon
O'Fallon Public Library
120 Civic Plaza, O'Fallon
Cities Near O'Fallon
The closest cities within 60 miles
Planning a move to O'Fallon?
Read our full moving guide — what it's really like to live here.
O'Fallon FAQ
Is O'Fallon, Illinois affordable?⌄
O'Fallon's median rent is $1,332/month, which is close to the national average. The median household income is $105,982/year. Median home value is $295,700.
Is O'Fallon, Illinois safe?⌄
O'Fallon's violent crime rate was 140 per 100,000 residents in 2025, which is well below the national average — one of the safer cities in the country of 329/100k that year. Property crime rate is 922 per 100,000. As with any city, crime rates vary by neighborhood.
What is the job market like in O'Fallon, Illinois?⌄
O'Fallon has an unemployment rate of 3.8%, which is close to the national average of 4.3%.
What is the cost of living in O'Fallon, Illinois?⌄
The cost of living in O'Fallon is primarily driven by housing. Median rent is $1,332/month and median household income is $105,982/year. The median home value is $295,700. About 46% of renters spend more than 30% of their income on housing.
How is the commute in O'Fallon, Illinois?⌄
The average commute in O'Fallon is 25 minutes, which is about average compared to the national average of 26 minutes.
Data from the US Census Bureau, BLS, FBI, NOAA, EPA, Zillow Research and other public sources. Where our data comes from