| Name | Marion County |
| State | Indiana |
| FIPS Code | 18097 |
| County Seat | Indianapolis |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 904,535 |
| Population Growth Rate(2000-2022) | 8.17% |
| Majority Ethnicity | White 63.51% |
| Public School Majority Ethnicity | African American 36% |
| Partisan Voting Index | Democratic:+15 |
| Unemployment Rate (January 2025) | 4.1% |
| Area Code(s) | 317 / 463 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 63.51% |
| African American | 31.74% |
| Hispanic | 0.28% |
| Asian | 4.43% |
| Native American | 0.02% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 28.25% |
| African American | 36.44% |
| Hispanic | 24% |
| Asian | 4.96% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 0.07% |