O'Fallon is a city in St. Charles County, Missouri, between Lake St. Louis and St. Peters. It is part of the St. Louis Metropolitan Statistical Area. Fort Zumwalt Park is a 48-acre park with four-acre Lake Whetsel surrounded by lush woodlands and the replica homestead fort of Jacob Zumwalt. St. Charles County Veterans Museum pays tribute to the veterans from St. Charles country.
What to See in O'Fallon, Missouri
City of O'Fallon - Government
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