Total Population in Marion County, IA
ACS 2024 5-Year Estimates
How Marion County Compares
National Distribution
Where Marion County falls among all 3,222 U.S. counties for total population.
■ Marion County: 33,642
Ranking Context
| Rank | County | Value |
|---|---|---|
| #1,375 | Pulaski County, VA | 33,687 |
| #1,376 | Caroline County, MD | 33,669 |
| #1,377 | Daviess County, IN | 33,658 |
| #1,378 | Marion County, IA | 33,642 |
| #1,379 | Halifax County, VA | 33,639 |
| #1,380 | Lee County, GA | 33,626 |
| #1,381 | Scotland County, NC | 33,590 |
Total Population in Marion County, Iowa
Marion County, Iowa has a total population of 33,642, which ranks #1,378 of 3,222 out of 3,222 counties nationwide. This is 100.0% below the national value of 330M.
Within Iowa, Marion County ranks #21 of 99 out of 99 counties. This places it in the 57th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.