O'Fallon Population History 1990 - 2023
O'Fallon Population By Year
| Year | Population | Rank in US | Growth Rate |
|---|---|---|---|
| 2023 | 31,968 | 1,256 | -0.4% |
| 2022 | 32,081 | 1,244 | -0.7% |
| 2021 | 32,292 | 1,220 | -0.1% |
| 2020 | 32,334 | 1,219 | 1.3% |
| 2010 | 28,281 | 1,265 | 2.4% |
| 2000 | 22,272 | 1,429 | 3.0% |
| 1990 | 16,550 | 1,630 | – |
O'Fallon Population Facts
What is the current population of O'Fallon?
Based on the latest 2024 data from the US census, the current population of O'Fallon is 31,968. O'Fallon, Illinois is the 1,256th largest city in the US.
What county is O'Fallon, Illinois in?
O'Fallon is located entirely in St Clair County.
What is the size of O'Fallon, Illinois in square miles?
O'Fallon has an area of 14.3 square miles.
What was the peak population of O'Fallon?
The peak population of O'Fallon was in 2020, when its population was 32,334. In 2020, O'Fallon was the 1,219th largest city in the US; now its fallen to the 1,256th largest city in the US. O'Fallon is currently 1.1% smaller than it was in 2020.
How quickly is O'Fallon growing?
O'Fallon has grown 43.5% since the 2000. O'Fallon, Illinois is growing moderately quickly; it is growing faster than 78% of similarly sized cities since 2000.
What is the population density of O'Fallon, Illinois?
O'Fallon has a population density of 1,970.3 people per square mile.
O'Fallon Demographics
What is the voting age population of O'Fallon, Illinois?
The total voting age population of O'Fallon, Illinois, meaning US citizens 18 or older, is 20,861. The voting age population is 48.2% male and 51.8% female.
What percentage of O'Fallon, Illinois residents are senior citizens?
According to the latest census statistics, 11.8% of the residents of O'Fallon are 65 or older.
What are the racial demographics of O'Fallon, Illinois?
The racial demographics of O'Fallon are 79.5% White, 11.8% Black, 4.1% Two or more races, 3.1% Asian, 1.4% Other and 0.1% American Indian. Additionally, 5.0% of the population identifies as Hispanic.
What percentage of O'Fallon, Illinois residents are below the poverty line?
In O'Fallon, 4.3% of residents have an income below the poverty line, and the child poverty rate is 4.3%. On a per-household basis, 3.5% of families are below the poverty line in O'Fallon.
What percentage of O'Fallon, Illinois residents are in the labor force?
Among those aged 16 and older, 69.2% of O'Fallon residents are in the labor force.
What are the education levels among O'Fallon, Illinois residents?
Among the adult population 25 years old and over, 96.9% of O'Fallon residents have at least a high school degree or equivalent, 47.8% have a bachelor's degree and 22.5% have a graduate or professional degree.
What percentage of O'Fallon, Illinois residents speak a non-English language at home?
Among O'Fallon residents aged 5 and older, 7.1% of them speak a non-English language at home. Broken down by language: 2.5% of residents speak Spanish at home, 1.9% speak an Indo-European language, and 2.0% speak an Asian language.
O'Fallon Income & Labor Statistics
What is the unemployment rate in O'Fallon, Illinois?
The unemployment rate in O'Fallon is 4.5%, which is calculated among residents aged 16 or older who are in the labor force.
What percentage of O'Fallon, Illinois residents work for the government?
In O'Fallon, 17.1% of the residents in the non-military labor force are employed by the local, state and federal government.
What is the median income in O'Fallon, Illinois?
The median household income in O'Fallon is $90,349.
O'Fallon Housing & Rent Statistics
What percentage of housing units are owner-occupied in O'Fallon, Illinois?
In O'Fallon, 69.2% of housing units are occupied by their owners.
What percentage of housing units are rented in O'Fallon, Illinois?
Renters occupy 30.8% of housing units in O'Fallon.
What percentage of O'Fallon, Illinois housing units were built before 1940?
Of all the housing units in O'Fallon, 5.5% of them were build before 1940.
What percentage of O'Fallon, Illinois housing units were built after 2000?
In O'Fallon, 32.9% of the total housing units were built after the year 2000, which is approximately 3,800 units.
What is the median monthly rent in O'Fallon, Illinois?
The median gross monthly rent payment for renters in O'Fallon is $1,066.
What percentage of households in O'Fallon, Illinois have broadband internet?
In O'Fallon, 90.5% of households have an active broadband internet connection.
Similarly Sized Cities In Illinois
| US Rank | Name | Population | Growth 2000-2023 |
|---|---|---|---|
| 1153 | Addison | 35,167 | -3.4% |
| 1178 | Calumet City | 34,358 | -11.9% |
| 1188 | Northbrook | 33,977 | 1.2% |
| 1197 | Woodridge | 33,566 | 7.8% |
| 1228 | St. Charles | 32,654 | 15.5% |
| 1235 | Glendale Heights | 32,409 | 1.3% |
| 1256 | O'Fallon | 31,968 | 43.5% |
| 1267 | Mundelein | 31,790 | 2.1% |
| 1282 | Elk Grove Village | 31,350 | -9.7% |
| 1289 | Pekin | 31,126 | -8.1% |
| 1309 | North Chicago | 30,416 | -15.4% |
| 1316 | Highland Park | 30,272 | -0.1% |
| 1321 | Gurnee | 30,193 | 4.2% |
Similarly Sized Cities In US
| US Rank | Name | Population | Growth 2000-2023 |
|---|---|---|---|
| 1250 | McDonough, Georgia | 32,138 | 277.4% |
| 1251 | Morristown, Tennessee | 32,099 | 21.1% |
| 1252 | Bay City, Michigan | 32,082 | -12.6% |
| 1253 | Sanford, North Carolina | 32,064 | 36.7% |
| 1254 | Atwater, California | 32,052 | 37.7% |
| 1255 | Des Moines, Washington | 31,988 | 8.1% |
| 1256 | O'Fallon, Illinois | 31,968 | 43.5% |
| 1257 | Dania Beach, Florida | 31,915 | 16.6% |
| 1258 | West Bend, Wisconsin | 31,886 | 12.4% |
| 1259 | Bell, California | 31,864 | -13.1% |
| 1260 | Fairbanks, Alaska | 31,856 | 5.5% |
| 1261 | Chamblee, Georgia | 31,841 | 233.9% |
| 1262 | Naugatuck, Connecticut | 31,820 | 2.5% |