Total Population in Marion County, FL
ACS 2024 5-Year Estimates
400,078
Rank #185/3,222 · #18 in FL
94th
Marion 400,078
FL 22M -98.2%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Marion County's total population of 400,078 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 Marion County for total population.
Nearby Rankings
Full ranking →| #182 | Orange County, NY | 406,616 |
| #183 | Madison County, AL | 405,718 |
| #184 | Genesee County, MI | 403,305 |
| #185 | Marion County, FL | 400,078 |
| #186 | Pulaski County, AR | 399,818 |
| #187 | Collier County, FL | 398,291 |
| #188 | Butler County, OH | 392,876 |
About Total Population
Marion County, Florida has a total population of 400,078, ranking #185 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within Florida, it ranks #18 of 67. This places it in the 94th 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.