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Missouri / St. Charles County
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All St. Charles County population data above are from the US Census Bureau.
With 373,495 people, St. Charles County is the 3rd most populated county in the state of Missouri out of 114 counties.
The largest St. Charles County racial/ethnic groups are White (88.3%) followed by Black (4.2%) and Hispanic (3.0%).
In 2013, the median household income of St. Charles County residents was $70,137. However, 6.1% of St. Charles County residents live in poverty.
The median age for St. Charles County residents is 37.7 years young.