O'Fallon, a city located in the state of Missouri (MO), is home to a population of approximately 91,825 people. O'Fallon boasts a median age of 38, with around 19.5% of its residents aged 60 or above. 6.5% of the population identifies as US Veterans. 9.9% of O'Fallon residents are disabled. The city has an average household income of $104,863, while the unemployment rate stands at 3.1%, and around 4.5% of the population is considered to be living below the poverty level. In terms of housing, the average home value in O'Fallon is $283,425, with a monthly rent averaging $1,311.