Population & Demographics
O’Fallon, MO
O’Fallon is home to 93,801 people. Explore its demographics, housing, and economy — plus how its 48,463 resident workers commute each day.
93,801 residents
Median age 38.4 · U.S. Census Bureau, ACS 5-Year (2024).
O’Fallon population & demographics
Who lives in O’Fallon — population, age, housing, and income, from the U.S. Census Bureau.
Source: U.S. Census Bureau, American Community Survey (ACS) 2024 5-Year Estimates. Values shown as “—” are suppressed or unavailable for this place.
Race & ethnicity in O’Fallon
How O’Fallon breaks down by race and ethnicity — each bar is that group’s share of the population, from the U.S. Census Bureau ACS 5-Year (2024).
Race across O’Fallon
Each dot is a group of people, placed in their 2020 Census block and colored by race or ethnicity — the pattern shows where groups live across O’Fallon.
These figures are for O’Fallon proper — the Census place within its city limits — not the surrounding metro area. Metro-wide totals you’ll see elsewhere are larger because they bundle in neighboring cities and suburbs.
How O’Fallon commutes
Every dot is a worker moving between home and job. Trace where the area pulls people in from — and where its residents head each day.
56 / 100
How short the typical commute is here, on an absolute 0–100 scale (higher is shorter). How it’s calculated.
O’Fallon
48,463 commutes, one dot at a time
O’Fallon
Where 48,463 workers commute
Where residents work
Top destinations for people who live in O’Fallon, by worker count.
Who commutes in
Top origin places for workers who travel into O’Fallon.
Top industries
The sectors that employ O’Fallon’s workforce. Each bar is scaled to that sector’s share of all local jobs — the top sectors shown don’t add up to 100%.
Internet options for O’Fallon
Researching a move to O’Fallon? Compare home internet plans and providers for the area.
FindBetterInternet is a CensusFlow partner site — we link out so you can compare local plans, and CensusFlow’s Census data stays independent.