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The total population of O'Fallon is estimated to be 32,104 with 15,732 males (49.00%) and 16,372 females (51.00%). There are 640 more females than males in O'Fallon.
The median household income in O'Fallon was $104,522 in 2021, which marked an an increase of 2,050(2%) from $102,472 in 2020. This income is 140.10% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, O'Fallon sees its highest median household income among householders in the age group of 45 to 64 years old, at $151,557. Overall, the median household income for the city of O'Fallon stands at $104,522.
In O'Fallon, the median income for all workers aged 15 years and older, regardless of work hours, was $68,963 for males and $39,787 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $91,487 for males and $66,248 for females.
In O'Fallon, the demographic landscape is diverse, spanning 4 distinct racial categories among households. Among these, Asian households have the highest median household income at $110,418, while Black or African American households represent the opposite end with the lowest median household income of $72,061.
In 2022, the population of O'Fallon was 32,140, a 0.46% decrease year-by-year from 2021. Previously, in 2021, O'Fallon's population was 32,290, a decline of 0.04% compared to a population of 32,303 in 2020.
The median age in O'Fallon, IL is 37.6, as per 2021 ACS 5-Year Estimates. Of the total population, 23.53% were under the age of 15, 15.85% aged 15 to 29, 45.68% aged 30 to 64, 12.52% aged 65 to 84, and 2.43% were 85 years of age and older.
Racial distribution of O'Fallon population: 74.29% are White, 13.20% are Black or African American, 0% are American Indian and Alaska Native, 3.90% are Asian, 0.89% are some other race and 7.72% are multiracial.