O Fallon Illinois Contact
O Fallon Illinois has a zip code of 62269. The current date and time in O Fallon is November 10, 2026, 11:25 pm and it has a population of 26,249 people. O Fallon Illinois lies at an elevation of 529 feet.
O Fallon Illinois has a zip code of 62269. The current date and time in O Fallon is November 10, 2026, 11:25 pm and it has a population of 26,249 people. O Fallon Illinois lies at an elevation of 529 feet.
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