Total Population in Marion County, IN
ACS 2024 5-Year Estimates
975,809
Rank #54/3,222 · #1 in IN
98th
Marion 975,809
IN 6,851,073 -85.8%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Marion County's total population of 975,809 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 →| #51 | Gwinnett County, GA | 979,864 |
| #52 | Denton County, TX | 979,561 |
| #53 | Capitol Planning Region, CT | 977,290 |
| #54 | Marion County, IN | 975,809 |
| #55 | Pinellas County, FL | 963,481 |
| #56 | Bergen County, NJ | 962,316 |
| #57 | Prince George's County, MD | 959,754 |
About Total Population
Marion County, Indiana has a total population of 975,809, ranking #54 of 3,222 counties nationwide — 99.7% below the national value of 330M. Within Indiana, it ranks #1 of 92. This places it in the 98th 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.