Total Population in St. Charles County, MO
ACS 2024 5-Year Estimates
414,535
Rank #178/3,222 · #3 in MO
95th
St. Charles 414,535
MO 6,191,814 -93.3%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How St. Charles County's total population of 414,535 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to St. Charles County for total population.
Nearby Rankings
Full ranking →| #175 | Richland County, SC | 422,117 |
| #176 | Charleston County, SC | 420,264 |
| #177 | Placer County, CA | 419,156 |
| #178 | St. Charles County, MO | 414,535 |
| #179 | Lake County, FL | 412,924 |
| #180 | Mobile County, AL | 412,590 |
| #181 | Waukesha County, WI | 411,762 |
About Total Population
St. Charles County, Missouri has a total population of 414,535, ranking #178 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within Missouri, it ranks #3 of 115. This places it in the 95th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.