City profile · Missouri · Census ACS 2023

O'Fallon, MO

Population, income, housing, safety, climate and schools for O'Fallon - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

92,697
Residents
$107,203
Median income
$305,100
Median home
$1,218
Median rent (state)

O'Fallon - the verdict

Nationally, O'Fallon sits in the 82nd percentile for household income and the 83rd percentile for safety among US cities with a population of 1,000 or more. Source: Census ACS + FBI UCR.

82nd
percentile, household income
66th
percentile, home value
38th
percentile, median rent
83rd
percentile, safety
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: O'Fallon, MO

Census ACS 2023 estimates count 92,697 residents in O'Fallon, a small city within Missouri. The typical household in O'Fallon brings in $107,203 a year, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 2.7%. Typical homes in O'Fallon are valued around $305,100, and the median resident age is 38.2 years. About 42.4% of adults hold a bachelor's degree or higher, while 70.8% of working-age residents are in the labor force.

Housing supply pressure shows in Census Building Permit Survey data: 484 residential units were authorized in 2024 (Slowing), down 15% from five years earlier. O'Fallon reports a comparatively low crime rate: per-100,000 total crime stands at 538.4 in FBI UCR data, below the national average (a voluntary reporting program, read this as reporting activity, not a definitive danger score).

Living costs in Missouri run below the national norm: on BEA's 100-equals-national-average cost index, Missouri scores 90.8 (Well Below Average), per the 2024 Regional Price Parities release. HUD Fair Market Rent for a typical two-bedroom in this state is $1,218 per month. Monthly utility costs average around $219 across Missouri, per EIA 2023 residential energy estimates. Natural-hazard exposure scores 92.6 out of 100 on FEMA's National Risk Index (Very High).

Population

92,697 residents

Census ACS 2023 - Missouri

Median Household Income

$107,203 /yr

Poverty 2.7%

Cost of Living Index (state)

90.8 (US=100)

Well Below Average - BEA RPP 2024, Missouri average

How does O'Fallon compare to other US cities?

Here's how O'Fallon stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.

Household income 82% higher than other cities
Home value 66% pricier than other cities
Median rent 38% pricier than other cities
Safety 83% safer than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

A national percentile can hide a lot of local variation: narrowed to Missouri alone, O'Fallon ranks #23 of 234 Missouri cities by lowest crime rate - a different, more locally useful comparison than stacking it against the entire country.

How we calculate these percentiles & ranks

For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below O'Fallon's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in Missouri, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.

82ndIncome percentile
83rdSafety percentile

82nd percentile nationally for median household income · 83rd percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.

O'Fallon's profile vs. every US city

Income, affordability, and safety percentile

O'Fallon's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown. 3-axis radar comparing 1 series across Income, Affordability, Safety. IncomeAffordabilitySafety 71 Avg. percentile National median
O'Fallon's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown.

How O'Fallon's home value compares nationally

Median home value vs. every US city (population 1,000+)

$305,100 34th percentile more affordable than 34% of 15,600 US cities

$0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). Below this entry. $150,000–$175,000: 1,278 US cities (8%). Below this entry. $175,000–$200,000: 1,229 US cities (8%). Below this entry. $200,000–$225,000: 1,035 US cities (7%). Below this entry. $225,000–$250,000: 976 US cities (6%). Below this entry. $250,000–$275,000: 754 US cities (5%). Below this entry. $275,000–$300,000: 712 US cities (5%). Below this entry. $300,000–$325,000: 521 US cities (3%). This entry sits in this band. $325,000–$350,000: 526 US cities (3%). Above this entry. $350,000–$375,000: 465 US cities (3%). Above this entry. $375,000–$400,000: 393 US cities (3%). Above this entry. $400,000–$425,000: 317 US cities (2%). Above this entry. $425,000–$450,000: 300 US cities (2%). Above this entry. $450,000–$475,000: 307 US cities (2%). Above this entry. $475,000–$500,000: 250 US cities (2%). Above this entry. $500,000–$525,000: 160 US cities (1%). Above this entry. $525,000–$550,000: 156 US cities (1%). Above this entry. $550,000–$575,000: 172 US cities (1%). Above this entry. $575,000–$600,000: 172 US cities (1%). Above this entry. $600,000–$625,000: 163 US cities (1%). Above this entry. $625,000–$650,000: 167 US cities (1%). Above this entry. $650,000–$675,000: 135 US cities (1%). Above this entry. $675,000–$700,000: 101 US cities (1%). Above this entry. $700,000–$725,000: 95 US cities (1%). Above this entry. $725,000–$750,000: 71 US cities (0%). Above this entry. $750,000–$775,000: 65 US cities (0%). Above this entry. $775,000–$800,000: 70 US cities (0%). Above this entry. $800,000–$825,000: 57 US cities (0%). Above this entry. $825,000–$850,000: 67 US cities (0%). Above this entry. $850,000–$875,000: 60 US cities (0%). Above this entry. $875,000–$900,000: 58 US cities (0%). Above this entry. $900,000–$925,000: 47 US cities (0%). Above this entry. $925,000–$950,000: 37 US cities (0%). Above this entry. $950,000–$975,000: 31 US cities (0%). Above this entry. $975,000–$1,000,000: 470 US cities (3%). Above this entry. $1,000,000–$1,025,000: 0 US cities (0%). Above this entry. O'Fallon $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Income distribution context

Household income distribution - O'Fallon, MO O'Fallon, MO's reported median household income shown against the U.S. national quintile-share pattern (not O'Fallon, MO-specific quintile data). The Lorenz curve traces the national cumulative income share against cumulative population share, perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution O'Fallon, MO median $107,203/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
O'Fallon, MO's median household income (Census ACS 5-year estimate) plotted against the U.S. national income-quintile distribution pattern for context; the quintile shares and Lorenz curve are national figures, not computed specifically for O'Fallon, MO. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 42.4%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 2.7%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 70.8%

Census ACS S2301, share of working-age residents in the labor force

Population
92,697
Median Income
$107,203
Median Home Value
$305,100
Median Age
38.2
Poverty Rate
2.7%
Labor force participation
70.8%
Bachelor's Degree+
42.4%

Safety & Crime

Total Crime Rate
538.4
per 100,000 residents
Violent Crime
59.0
per 100,000 residents
Property Crime
479.4
per 100,000 residents

Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.

Schools

Total Schools
18
Public schools in this city

Population Change

Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025

See the fastest-growing cities →
90,000 residents92,000 residents94,000 residents96,000 residents98,000 residents 202020212022202320242025 91,673 residents 96,101 residents ▲ +4.8%
O'Fallon's Census PEP population estimates, 2020–2025.

Housing Supply

Census Bureau Building Permits Survey (BPS) - annual residential permits authorized

🏗️ Slowing
Total Permits (2024)
484
housing units authorized
Single-Family
306
detached homes
Multifamily
178
apartments & condos
Supply Intensity
5.2
permits per 1,000 residents

5-Year Permit Trend (2019–2024)

Year Total
2019 571
2020 1,067
2021 357
2022 452
2023 412
2024 484

Permit volume decreased 15% from 2019 to 2024.

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
77.7%
Carpool
4.5%
Public Transit
0.1%
Walk
0.6%
Work from Home
15.7%
Other
1.4%

Based on 51,266 workers 16 and over.

Monthly Utility Costs

State-average estimates for Missouri - EIA 2023 residential energy data

Electricity
$105
avg/month
Natural Gas
$72
avg/month
Water & Sewer
$42
avg/month
Total Utilities
$219
estimated/month

Estimates reflect Missouri state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Cost of living is a Missouri state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county O'Fallon sits in

Cost of Living Index
90.8
Well Below Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,218/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
92.6 / 100
Very High
FEMA NRI composite score (county)

Similar Cities in Missouri

Lee's Summit
102,583 people
St. Joseph
71,542 people
St. Charles
71,048 people
Independence
121,944 people
Blue Springs
59,416 people
St. Peters
58,200 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to O'Fallon's 92,697 residents (Census ACS 5-Year 2023).

Mount Pleasant, SC
92,662 people
Roswell, GA
92,577 people
Mission Viejo, CA
92,415 people
Hoover, AL
92,401 people
Bellingham, WA
92,367 people
Redding, CA
93,268 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to O'Fallon's $107,203 (Census ACS 5-Year 2023, table B19013).

Balmville, NY
$107,204 median income
Leith-Hatfield, PA
$107,206 median income
St. Jacob, IL
$107,188 median income
East San Gabriel, CA
$107,184 median income
West Mountain, UT
$107,222 median income
North Shore, VA
$107,235 median income

Race & Ethnicity Composition

Race and ethnicity - O'Fallon, MO Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition O'Fallon, MO - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 82.5% 6.8% ETHNICITY, Hispanic or Latino (any race) 5.0% White 82.5% Black or African American 5.1% Asian 4.2% American Indian 0.1% Native Hawaiian 0.0% Some other race 1.2% Two or more races 6.8% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.

How O'Fallon compares to nearby Missouri cities

Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).

City Population Median Household Income
O'Fallon (this city) 92,697 $107,203
Lee's Summit 102,583 $104,989
St. Joseph 71,542 $55,578
St. Charles 71,048 $85,522
Census ACS 5-year FIPS MO FBI UCR NCES CCD Census BPS 2024 OMB Bulletin 23-01

What do people ask about O'Fallon, MO?

What is the population of O'Fallon, MO? +

O'Fallon, MO has a population of 92,697 according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in O'Fallon, MO? +

O'Fallon households earn a median of $107,203 annually, based on Census ACS 2023 data.

What is the cost of living in O'Fallon? +

BEA does not publish a city-level cost-of-living figure for O'Fallon; the closest available measure is the Missouri state average, a cost of living index of 90.8 (U.S. average = 100), rated "Well Below Average" based on BEA Regional Price Parities 2024 data. Costs within Missouri vary by metro area.

Is O'Fallon, MO safe? +

O'Fallon has a total crime rate of 538.4 per 100,000 residents, which is below the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.

What is the median home value in O'Fallon, MO? +

Homes in O'Fallon carry a median value of $305,100, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities Editorial

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Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.