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The total population of St. Charles County is estimated to be 406,262 with 201,131 males (49.51%) and 205,131 females (50.49%). There are 4,000 more females than males in St. Charles County.
The median household income in St. Charles County was $99,219 in 2021, which marked an a decrease of 94(0.09%) from $99,313 in 2020. This income is 132.99% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, St. Charles County sees its highest median household income among householders in the age group of 45 to 64 years old, at $125,420. Overall, the median household income for the county of St. Charles County stands at $98,831.
In St. Charles County, the median income for all workers aged 15 years and older, regardless of work hours, was $57,272 for males and $39,476 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $75,019 for males and $56,693 for females.
In St. Charles County, the demographic landscape is diverse, spanning 6 distinct racial categories among households. Among these, Asian households have the highest median household income at $113,895, while Some Other Race households represent the opposite end with the lowest median household income of $65,005.
In 2022, the population of St. Charles County was 413,803, a 0.80% increase year-by-year from 2021. Previously, in 2021, St. Charles County's population was 410,511, an increase of 1.02% compared to a population of 406,385 in 2020.
The median age in St. Charles County, MO is 39.2, as per 2021 ACS 5-Year Estimates. Of the total population, 19.12% were under the age of 15, 18.45% aged 15 to 29, 47.09% aged 30 to 64, 13.74% aged 65 to 84, and 1.60% were 85 years of age and older.
Racial distribution of St. Charles County population: 87.70% are White, 4.62% are Black or African American, 0.08% are American Indian and Alaska Native, 2.69% are Asian, 0.03% are Native Hawaiian and other Pacific Islander, 0.86% are some other race and 4.02% are multiracial.