In the fantastic area of O'Fallon you’ll be in good company with around 33,610 residents with around 71% of those homeowners. With an average age of 37, the residents of O'Fallon are well established, made up of families of all age groups. Though fairly kicked back throughout the week, during weekends and holidays, you can see a lot more activity and excitement. Over the past 30 days roughly 16 homes have been sold with an average sold price of $382,551. That is an increase of $60,519 from the previous period.