Median Income
$107,203
43% higher than US avg
Home Value
$305,100
8% higher than US avg
Violent Crime
127/100K
67% lower than US avg
Bachelor's+
42.4%
26% higher than US avg
Median Rent
$1,400
20% higher than US avg
Obesity Rate
35.3%
10% higher than US avg
Unemployment
1.9%
47% lower than US avg
Poverty Rate
2.7%
78% lower than US avg
How O'Fallon Compares to the U.S. Average (100% = U.S. avg)
People
Population92,697
Median Age38.2 yrs
Density3,034/mi²
Male / Female49% / 51%
Largest GroupWhite 83%
Veterans6.2%
Economy
A+
Median Income$107,203
Per Capita$47,429
Unemployment1.9%
Poverty2.7%
Commute26 min
Housing
A+
Home Value$305,100
Rent$1,400
Ownership80.2%
Zillow$465,147
Housing Units34,965
Rent Burden25.1%
Crime
F
Violent127/100K
Property1,133/100K
Murder1.1/100K
Assault98/100K
Burglary84/100K
Health
Obesity35.3%
Uninsured6.7%
Smoking12.6%
Depression23.8%
Heart Disease4.7%
Climate
Avg Temp55°F (13°C)
AQI41 (Good)
Rain37.8 in/yr
Sunny Days267/yr
Elevation548 ft (167 m)
Education
A
Bachelor's+42.4%
High School+95.5%
Graduate+15.1%
School Score5.51
Community
2024 VoteR 77% / D 22%
Commute26 min
Broadband94.3%
EV Stations3
Is O'Fallon a Good Place to Live?
Based on current data, O'Fallon receives an overall livability score of 3.8 out of 5.0, earning a grade of B+. Key strengths include above-average household incomes, low unemployment, low crime rates, a highly educated population. O'Fallon offers a solid quality of life with a good balance of affordability, safety, and opportunity.
Economy & Jobs
The median household income in O'Fallon is $107,203, which is significantly higher than the national average / 43% above $75,149. This places O'Fallon among higher-income communities. The job market is very strong with unemployment at just 1.9%. Only 2.7% of residents live below the poverty line, well below the national rate of 12.4%. Workers commute an average of 26 minutes.
Cost of Living & Housing
The median home value in O'Fallon is $305,100, roughly aligned with the national median of $281,900. Renters pay a median of $1,400 per month. At just 2.8x median income, home prices are very affordable relative to local earnings.
Safety & Crime
O'Fallon is a very safe community with a violent crime rate of 127 per 100,000 residents / well below the national average of 380. Property crime occurs at a rate of 1,133 per 100,000, 42% below the national average.
Education
Educational attainment is solid, with 42.4% holding a bachelor's degree or higher, near the national average. 95.5% have completed high school. Area schools have an average test score of 5.5/10.
Climate & Weather
O'Fallon experiences four distinct seasons with an average temperature of 55°F. Winters average 29°F in January while summers reach 78°F in July. With 267 sunny days per year, residents enjoy well above the national average of sunshine. Annual precipitation totals 37.8 inches, including 6.5 inches of snow. Air quality is rated Good with a median AQI of 41.
O'Fallon has a population of 92,697 with a density of 3,034 people per square mile, spread across 30.6 square miles. The median age is 38.2 years, 2% younger than the national median of 38.9. The gender split is 50.8% female and 49.2% male. The city is predominantly White (82.5%), with 5.1% Black. English is the primary language spoken at home by 93.5% of residents, while 6.5% speak Spanish. 6.2% of the population are veterans. 9.9% of residents have a disability (below the 13.0% national average). 95.6% have health insurance coverage.
Population
38.2yrs
Median Age
2% below US avg
Language Spoken at Home
English Only
93.5%
19% above US avg
Spanish
6.5%
51% below US avg
The median household income in O'Fallon is $107,203, which is 43% above the national average of $75,149. Per capita income is $47,429 (above the $39,052 national figure). The unemployment rate is 1.9% (below the 3.6% US average). 2.7% of residents live below the poverty line, lower than the national rate of 12.4%. The cost of living index is 90.8, below the national baseline of 100 / offering relatively affordable living. Workers commute an average of 26 minutes. 15.7% of workers work from home.
Income
| Median HH Income | $107,203 |
| 43% above US avg |
| Per Capita Income | $47,429 |
Employment & Poverty
| Unemployment | 1.9% |
| 47% below US avg |
| Poverty Rate | 2.7% |
| 78% below US avg |
Tax & Cost of Living
| |
| Cost of Living | 90.80 (100=avg) |
Commute & Transportation
| Commute Time | 25.6 min |
| Drive Alone | 77.7% |
| Public Transit | 0.1% |
| Work from Home | 15.7% |
The median home value in O'Fallon is $305,100, 8% above the national median of $281,900. Zillow estimates the typical home value at $465,147, higher than the Census estimate. Homes sell for 100.3% of their list price, indicating a competitive market where bidding wars are common. Monthly rent averages $1,400 (20% above the national average of $1,163). Fair market rent ranges from $775 for a one-bedroom to $970 for a two-bedroom apartment. 80.2% of housing units are owner-occupied (above the 65.4% national rate). There are 34,965 total housing units in the city. The median year a home was built is 1999. 25.1% of renters spend 30% or more of their income on housing. The home price-to-income ratio is 2.8x, well within the affordable range.
Home Values
| Census Median | $305,100 |
| 8% above US avg |
| Zillow ZHVI | $465,147 |
| Median List Price | $370,000 |
Real Estate Market (Redfin)
| Median List Price | $370,000 |
| $/Sq Ft | $174 |
| Homes Sold | 65 |
| Sale-to-List Ratio | 100.3% |
| Price Drops | 30.0% |
| Inventory | 90 |
Rental Costs
| Census Median Rent | $1,400 |
| 20% above US avg |
| Rent Burden | 25.1% |
HUD Fair Market Rent
| Studio | $732 |
| 1 Bedroom | $775 |
| 2 Bedrooms | $970 |
| 3 Bedrooms | $1,265 |
| 4 Bedrooms | $1,457 |
Ownership & Property
| Homeownership | 80.2% |
| Owner-Occupied | 80.2% |
| Renter-Occupied | 19.8% |
| Housing Units | 34,965 |
| Median Year Built | 1999 |
Property Tax
In O'Fallon, 35.3% of adults are obese, above the national rate of 32.1%. 8.9% have diabetes. Heart disease affects 4.7% of residents, below the national average. 28.3% have high blood pressure. 12.6% are current smokers. 20.0% report binge drinking. 22.7% are physically inactive. 23.8% report depression (above the 20.0% national average). 16.4% experience frequent mental distress. 6.7% of residents lack health insurance (below the 8.6% national rate).
Air Quality (Open-Meteo CAMS — 2026-05-21)
PM2.5
8.6
μg/m³
Fine particulate
PM10
9.4
μg/m³
Coarse particulate
NO₂
7.2
μg/m³
Nitrogen dioxide
SO₂
0.6
μg/m³
Sulphur dioxide
CO
144.0
μg/m³
Carbon monoxide
Health Metrics: O'Fallon vs U.S. Average (%)
Chronic Conditions
| Obesity | 35.3% |
| 10% above US avg |
| Diabetes | 8.9% |
| Heart Disease | 4.7% |
| High Blood Pressure | 28.3% |
| Asthma | 10.3% |
| COPD | 5.2% |
| Cancer | 7.6% |
| Stroke | 2.5% |
Behaviors & Mental Health
| Smoking | 12.6% |
| 10% below US avg |
| Binge Drinking | 20.0% |
| Physical Inactivity | 22.7% |
| Depression | 23.8% |
| Mental Distress | 16.4% |
| Physical Distress | 11.4% |
| Short Sleep | 40.3% |
Healthcare Access
| Insurance Rate | 95.6% |
| Uninsured | 6.7% |
| 22% below US avg |
| Checkup Rate | 76.2% |
| Dental Visits | 66.1% |
Food & Exercise
O'Fallon has a violent crime rate of 127 per 100,000 residents, 67% below the national average of 380. This breaks down to aggravated assault at 98.2 per 100,000, robbery at 10.0, rape at 17.9. The murder rate is 1.1 per 100,000 (below the national rate of 6.3). Property crime stands at 1,133 per 100,000, 42% below the U.S. average. This includes larceny/theft at 968, burglary at 84, vehicle theft at 81 per 100,000 residents. Overall, O'Fallon receives a safety grade of F.
Crime Rates: O'Fallon vs U.S. Average (per 100,000)
Violent Crime
| Total Violent | 127.2/100K |
| 67% below US avg |
| Murder | 1.1/100K |
| 82% below US avg |
| Rape | 17.9/100K |
| Robbery | 10.0/100K |
| Assault | 98.2/100K |
Property Crime
| Total Property | 1,132.7/100K |
| 42% below US avg |
| Burglary | 83.7/100K |
| Theft | 967.5/100K |
| Vehicle Theft | 81.5/100K |
| Arson | 1.1/100K |
Traffic Safety
| Traffic Accidents | 64 |
| Avg Accident Severity | 2.2 / 4.0 |
Safety Score
| Safety Grade | F |
| Safety Score | 1.0 / 5.0 |
O'Fallon experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 29°F in January while summers reach 78°F in July. The area gets 267 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 37.8 inches. The area receives 6.5 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 548 feet.
Temperature
29°F Jan (-2°C)
78°F Jul (26°C)
| Annual Average | 54.7°F |
| 1% above US avg |
| January Average | 29°F (-2°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 267 days/yr |
Geography
| Elevation | 548 ft (167 m) |
| Area | 30.6 sq mi (79.1 km²) |
| Population Density | 3,034/sq mi |
| Coordinates | 38.8106°N, 90.6999°W |
| Timezone | America/Chicago |
| Nearest Airport | St Louis Lambert International (STL) 18 miles away |
Precipitation & Snow
Annual Rainfall
37.8"
1% below US avg
Wettest Month (May)
4.25"
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Earthquake History
28 earthquakes (M2.5+) within 150 km since 1990.
Strongest: M3.9. Most recent: M2.6 on Sep 19, 2024.
| Jun 7, 2011 |
18 km NNW of Potosi, Missouri |
M3.9 |
83 km |
| Mar 2, 1990 |
9 km NW of Vernon, Illinois |
M3.4 |
133 km |
| Aug 27, 1993 |
5 km SSE of Olympian Village, Missouri |
M3.3 |
83 km |
| Jan 29, 1993 |
7 km WNW of Brownstown, Illinois |
M3.2 |
147 km |
| Apr 6, 1994 |
2 km NE of Tamaroa, Illinois |
M3.2 |
148 km |
| Jul 1, 2017 |
9 km SSE of Mulberry Grove, Illinois |
M3.1 |
128 km |
| Jul 8, 2003 |
1 km N of Leasburg, Missouri |
M2.9 |
94 km |
| Feb 8, 2004 |
6 km SSW of Stoutsville, Missouri |
M2.9 |
127 km |
| May 18, 2006 |
9 km SSE of De Soto, Missouri |
M2.9 |
86 km |
| Apr 29, 2022 |
1 km SSW of Peerless Park, Missouri |
M2.8 |
36 km |
| Mar 28, 2024 |
1 km NNE of Germantown, Illinois |
M2.8 |
105 km |
| Jul 31, 1995 |
8 km SSW of Caledonia, Missouri |
M2.8 |
125 km |
| May 5, 2008 |
3 km SSE of Fenton, Missouri |
M2.8 |
44 km |
| Sep 13, 1997 |
3 km SSE of Darmstadt, Illinois |
M2.8 |
104 km |
| Jul 15, 1990 |
7 km SW of Potosi, Missouri |
M2.7 |
104 km |
| Nov 12, 1996 |
15 km SSE of Olympian Village, Missouri |
M2.7 |
94 km |
| Jul 22, 1998 |
12 km NE of Mine La Motte, Missouri |
M2.7 |
133 km |
| Sep 5, 2015 |
5 km SE of High Ridge, Missouri |
M2.7 |
46 km |
| Nov 25, 2013 |
8 km NE of Bonne Terre, Missouri |
M2.6 |
95 km |
| Mar 7, 2009 |
7 km S of Miramiguoa Park, Missouri |
M2.6 |
78 km |
Source: USGS (M2.5+, 1990–2025)
Tornado History
532 tornadoes (EF0+) within 100 km since 1950.
Strongest: EF4. Total: 57 fatalities, 1,037 injuries.
| Date |
Rating |
Distance |
Fatalities |
| Apr 22, 2011 |
EF4 |
20 km |
0 |
| Apr 3, 1981 |
EF4 |
50 km |
0 |
| Jan 24, 1967 |
EF4 |
20 km |
3 |
| Feb 10, 1959 |
EF4 |
32 km |
21 |
| Feb 24, 1956 |
EF4 |
44 km |
6 |
| Dec 10, 2021 |
EF3 |
56 km |
6 |
| Dec 10, 2021 |
EF3 |
30 km |
1 |
| May 31, 2013 |
EF3 |
48 km |
0 |
| May 31, 2013 |
EF3 |
14 km |
0 |
| Dec 31, 2010 |
EF3 |
41 km |
1 |
| Mar 13, 2006 |
EF3 |
64 km |
0 |
| Mar 13, 2006 |
EF3 |
54 km |
0 |
| Mar 11, 2006 |
EF3 |
83 km |
0 |
| Nov 15, 1988 |
EF3 |
1 km |
0 |
| Nov 15, 1988 |
EF3 |
64 km |
0 |
| Apr 29, 1984 |
EF3 |
25 km |
0 |
| May 1, 1983 |
EF3 |
66 km |
0 |
| May 1, 1983 |
EF3 |
52 km |
0 |
| Dec 2, 1982 |
EF3 |
93 km |
2 |
| Apr 22, 1981 |
EF3 |
72 km |
1 |
Source: NOAA SPC (EF0+, 1950–2024)
Wildfire History
9 wildfires (100+ acres) within 100 km.
Largest: SMITH MILL HOLLOW (3,978 ac, 2022).
| Year |
Name |
Acres |
Distance |
| 2022 |
SMITH MILL HOLLOW |
3,978 |
99 km |
| 2019 |
UNNAMED |
2,688 |
99 km |
| 2004 |
CICERO CREEK |
1,846 |
91 km |
| 2024 |
HARMON SPRING RX |
1,330 |
97 km |
| 2018 |
UNNAMED |
1,285 |
97 km |
| 2022 |
NORTH KOFFER HOLLOW |
783 |
100 km |
| 1989 |
UNNAMED |
600 |
98 km |
| 2000 |
UNNAMED |
549 |
94 km |
| 1997 |
FLATWOODS |
530 |
100 km |
Source: NIFC/IRWIN (100+ acres)
Monthly Weather
| Month |
Avg Temperature |
Precipitation |
Summary |
| January |
29°F (-2°C) |
1.8 in |
Coldest, Driest |
| February |
34°F (1°C) |
2.1 in |
|
| March |
44°F (7°C) |
3.4 in |
|
| April |
55°F (13°C) |
3.7 in |
|
| May |
64°F (18°C) |
4.3 in |
Wettest |
| June |
73°F (23°C) |
3.5 in |
|
| July |
78°F (26°C) |
3.9 in |
Warmest |
| August |
76°F (24°C) |
3.2 in |
|
| September |
68°F (20°C) |
3.2 in |
|
| October |
57°F (14°C) |
3.0 in |
|
| November |
45°F (7°C) |
3.2 in |
|
| December |
34°F (1°C) |
2.6 in |
|
O'Fallon has a seasonal temperature swing of 49°F / from 29°F in January to 78°F in July. Total annual precipitation is 37.8 inches, with May being the wettest month (4.3") and January the driest (1.8").
Average costs for common services in O'Fallon. Prices are estimated based on regional cost of living data and may vary by provider.
Healthcare
| Doctor Visit (Primary Care) |
$227 ($136–$363) |
| Specialist Visit |
$318 ($182–$499) |
| Urgent Care Visit |
$182 ($91–$318) |
| Emergency Room Visit |
$1,998 ($726–$4,540) |
| Dental Cleaning |
$118 ($68–$182) |
| Dental Filling |
$227 ($136–$363) |
View all 40 services
Auto Repair
| Oil Change (Conventional) |
$41 ($23–$68) |
| Oil Change (Synthetic) |
$68 ($45–$109) |
| Brake Pad Replacement |
$272 ($136–$454) |
| Tire Rotation |
$36 ($18–$68) |
| New Tires (Set of 4) |
$545 ($363–$908) |
| Battery Replacement |
$182 ($91–$318) |
View all 18 services
Home Services
| Plumber (Per Hour) |
$91 ($54–$136) |
| Electrician (Per Hour) |
$82 ($45–$127) |
| HVAC Repair |
$363 ($136–$726) |
| HVAC System Install |
$6,356 ($3,632–$10,896) |
| Roof Repair |
$908 ($363–$1,816) |
| Roof Replacement |
$8,172 ($4,994–$13,620) |
View all 25 services
Legal
| Divorce (Uncontested) |
$1,362 ($454–$3,178) |
| Divorce (Contested) |
$13,620 ($4,540–$27,240) |
| DUI Defense |
$4,540 ($1,816–$9,080) |
| Bankruptcy (Chapter 7) |
$1,362 ($726–$2,724) |
| Will Preparation |
$454 ($182–$908) |
| Trust Preparation |
$2,270 ($908–$4,540) |
View all 12 services
Personal Care
| Men's Haircut |
$23 ($14–$41) |
| Women's Haircut |
$50 ($27–$91) |
| Hair Coloring (Full) |
$136 ($68–$227) |
| Manicure |
$23 ($14–$41) |
| Pedicure |
$36 ($23–$59) |
| Massage (1 Hour) |
$73 ($45–$118) |
View all 12 services
Food & Grocery
| Gallon of Milk (per gallon) |
$3.72 ($2.72–$4.99) |
| Dozen Eggs (per dozen) |
$3.18 ($2.27–$4.54) |
| Loaf of Bread |
$3.45 ($2.27–$4.99) |
| Chicken Breast (per lb) |
$4.09 ($2.72–$5.90) |
| Ground Beef (per lb) |
$4.99 ($3.63–$6.81) |
| Rice (per lb) |
$0.91 ($0.54–$1.63) |
View all 20 services
Utilities
| Electricity (Monthly) |
$127 ($73–$227) |
| Natural Gas (Monthly) |
$64 ($27–$136) |
| Water/Sewer (Monthly) |
$64 ($36–$109) |
| Internet (Monthly) |
$64 ($36–$91) |
| Cell Phone Plan (Monthly) |
$59 ($27–$91) |
| Cable TV (Monthly) |
$77 ($45–$136) |
View all 8 services
Transportation
| Monthly Parking (Downtown) |
$182 ($68–$454) |
| Car Insurance (Annual) |
$1,816 ($1,090–$3,178) |
| Bus Pass (Monthly) |
$64 ($27–$118) |
| Taxi/Uber (5-Mile Ride) |
$14 ($7.26–$23) |
| Car Registration (Annual) |
$91 ($27–$227) |
| Driver's License Renewal |
$27 ($14–$68) |
View all 8 services
Education & Childcare
| Daycare (Infant, Monthly) |
$1,090 ($545–$2,270) |
| Daycare (Toddler, Monthly) |
$908 ($454–$1,816) |
| After-School Care (Monthly) |
$363 ($182–$636) |
| Tutoring (Per Hour) |
$45 ($23–$91) |
| SAT/ACT Prep Course |
$908 ($363–$2,270) |
| Private School (K-12, Annual) |
$11,350 ($4,540–$27,240) |
View all 8 services
Pets
| Vet Visit (Routine Checkup) |
$54 ($27–$91) |
| Dog Vaccination (Annual) |
$91 ($45–$182) |
| Dog Grooming |
$54 ($27–$91) |
| Pet Boarding (Per Night) |
$36 ($18–$68) |
| Dog Spay/Neuter |
$272 ($136–$454) |
| Cat Spay/Neuter |
$182 ($91–$363) |
View all 9 services
Frequently Asked Questions About O'Fallon
What is the population of O'Fallon?
O'Fallon has a population of 92,697 residents and is located in Missouri. The population density is 3,034 people per square mile, spread across 30.6 square miles. The median age of residents is 38.2 years. The population is 50.8% female and 49.2% male.
Is O'Fallon expensive to live in?
O'Fallon is more affordable than the national average, with a cost of living index of 90.8 / below the baseline of 100. The median household income is $107,203, 43% above the national average of $75,149. The median home value is $305,100 (8% above the U.S. median). Renters pay a median of $1,400 per month, above the national average of $1,163. The home price-to-income ratio is 2.8x, indicating housing is reasonably affordable relative to local income levels.
Is O'Fallon safe?
O'Fallon is considered a very safe city with a violent crime rate of 127 per 100,000 residents, well below the national average of 380. Property crime occurs at a rate of 1,133 per 100,000 (below the national average). Overall, O'Fallon receives a safety grade of F based on combined crime data.
What is the weather like in O'Fallon?
O'Fallon has a four-season climate with an average annual temperature of 55°F (13°C). Winter temperatures average 29°F in January, while summers reach an average of 78°F in July. The area receives 267 sunny days per year, well above the national average of 205. Annual rainfall totals 37.8 inches, with 6.5 inches of snow. Air quality is rated Good with a median Air Quality Index (AQI) of 41.
How is the job market in O'Fallon?
The job market in O'Fallon is very strong, with unemployment at just 1.9% / well below the national rate of 3.6%. The average commute time is 26 minutes, and 15.7% of workers work from home.
How much does housing cost in O'Fallon?
The median home value in O'Fallon is $305,100. Zillow estimates the typical home value at $465,147. For renters, the median monthly rent is $1,400. Fair market rent is $775 for a 1-bedroom and $970 for a 2-bedroom apartment. The homeownership rate is 80.2%.
How are the schools in O'Fallon?
Schools in O'Fallon score 5.5 out of 10 on standardized testing, near the national average. 42.4% of adults in O'Fallon hold a bachelor's degree or higher, above the national average of 33.7%. 95.5% have completed high school. 15.1% hold a graduate or professional degree.
How healthy is O'Fallon?
The obesity rate in O'Fallon is 35.3% (above the national rate of 32.1%). 12.6% of adults are smokers. 22.7% are physically inactive. 23.8% of residents report depression. 6.7% lack health insurance (below the national rate).
What is transportation like in O'Fallon?
The average commute in O'Fallon is 26 minutes. 77.7% of workers drive alone to work, and 15.7% work from home.
What are the demographics of O'Fallon?
The racial and ethnic makeup of O'Fallon is 82.5% White, 5.1% Black or African American, 1% Hispanic or Latino. 93.5% of residents speak only English at home, while 6.5% speak Spanish. 6.2% of the population are military veterans. 9.9% of residents have a disability. 95.6% have health insurance coverage.