Population of O'Fallon, Illinois as of June 2024. How many people live in O'Fallon today?

USA / Illinois / O'Fallon

The exact population of O'Fallon, Illinois as of June 2024 is estimated at 32,289 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from O'Fallon.

Population of O'Fallon, IL

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This population of O'Fallon IL is provided by US bureau of statistics.
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