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O'Fallon, Missouri

City in St. Charles County, Missouri · ZIP 63366, 63367, 63368

  • St. Charles County
  • Census data · ACS 2019-2023
  • 23 public schools
Join O'FallonAsk O'FallonBusinessesPeople
  • 95,355 (2024 estimate)Population
  • 34,749Households
  • $107,203Median household income
  • $305,100Median home value
  • 23Public schools
  • 4ZIP codes

About O'Fallon

This page shows only what has been published about O'Fallon: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.

Town intelligenceOfficial sources, refreshed yearly

Population, 2000 to 2020+97.8%
40k60k80k100k2000: 46,16920002010: 79,32920102020: 91,316202046,16991,316
Population of O'Fallon at each census
CensusPopulation
200046,169
201079,329
202091,316

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, place level, state 29, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 29, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 29, retrieved November 14, 2026.

Household income in O'Fallon
Under $50k19.2%
$50k to $100k26%
$100k to $150k24.9%
$150k to $200k15.6%
$200k and over14.4%

Median household income $107,203 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 29, retrieved November 14, 2026.

Housing tenure in O'Fallon
Owner occupied
27,855 units
Renter occupied
6,894 units
Vacancy rate
2.3%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, place level, state 29, retrieved November 14, 2026.

O'Fallon compared with its county and state
O'Fallon compared with its county and state, American Community Survey 2019-2023
MeasureO'FallonSt. Charles CountyMissouri
Population92,697409,8306,168,181
Median household income$107,203$102,912$68,920
Median age38.239.638.9
Median home value$305,100$296,800$215,600
Bachelor’s degree or higher42.4%42.4%31.9%
Foreign-born residents5.4%4.3%4.4%
Owner-occupied homes80.2%80.7%67.9%
Mean commute to work25.6 minutes24.9 minutes23.7 minutes

Source: American Community Survey 5-year data profile 2019–2023, place level, state 29, retrieved November 14, 2026.

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Schools

Public schools in O'Fallon23
Public schools in O'Fallon, NCES directory 2023–2024
SchoolTypeGradesDistrict
CROSSROADS ELEM.PublicK–5WENTZVILLE R-IV
DARDENNE ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
DISCOVERY RIDGE ELEMENTARYPublicK–5WENTZVILLE R-IV
EMGE ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
FOREST PARK ELEM.Public3–5FORT ZUMWALT SCHOOL DISTRICT
JOSEPH L. MUDD ELEM.PublicK–2FORT ZUMWALT SCHOOL DISTRICT
MOUNT HOPE ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
PHEASANT POINT ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
PROGRESS SOUTH ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
ROCK CREEK ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
TWIN CHIMNEYS ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
WESTHOFF ELEM.PublicK–5FORT ZUMWALT SCHOOL DISTRICT
FRONTIER MIDDLEPublic6–8WENTZVILLE R-IV
FT. ZUMWALT NORTH MIDDLEPublic6–8FORT ZUMWALT SCHOOL DISTRICT
FT. ZUMWALT SOUTH MIDDLEPublic6–8FORT ZUMWALT SCHOOL DISTRICT
FT. ZUWMALT WEST MIDDLEPublic6–8FORT ZUMWALT SCHOOL DISTRICT
FRANCIS HOWELL UNION HIGHAlternative9–12FRANCIS HOWELL R-III
FT. ZUMWALT HOPE HIGHAlternative9–12FORT ZUMWALT SCHOOL DISTRICT
FT. ZUMWALT NORTH HIGHPublic9–12FORT ZUMWALT SCHOOL DISTRICT
FT. ZUMWALT WEST HIGHPublic9–12FORT ZUMWALT SCHOOL DISTRICT
LIBERTY HIGH SCHOOLPublic9–12WENTZVILLE R-IV
BoonslickSpecial educationK–12MO SCHLS FOR THE SEV DISABLED
MIKE CLEMENS CENTER ADAPT LRNGAlternativeK–12FORT ZUMWALT SCHOOL DISTRICT

Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.

Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.

Frequently asked about O'FallonPromoted from questions people asked

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Nearby towns

Other towns in St. Charles County

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