Marion County's estimated 2026 population is 994,179 with a growth rate of 0.2% in the past year according to the most recent United States census data. Marion County is the largest county in Indiana. The 2010 population was 904,604 and has seen a growth of 9.9% since that time.
Data after 2023 is projected based on recent change
Overall: 34.4 years
Female: 35.3 years
Male: 33.4 years
There are 731,894 adults, (128,452 of whom are seniors) in Marion County.
Female: 503,249 (51.6%)
Male: 472,560 (48.4%)
The racial composition of Marion County includes 51.88% White, 27.43% Black or African American, 6.38% other race, 4.07% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 506,230 | 51.88% |
| Black or African American | 267,690 | 27.43% |
| Two or more races | 93,959 | 9.63% |
| Other race | 62,296 | 6.38% |
| Asian | 39,759 | 4.07% |
| Native American | 5,651 | 0.58% |
| Native Hawaiian or Pacific Islander | 224 | 0.02% |
Marion County's average per capita income is $47,631. Household income levels show a median of $66,346. The poverty rate stands at 15.35%.
Name | Median | Mean |
|---|---|---|
| Married Families | $107,296 | $135,514 |
| Families | $83,024 | $110,917 |
| Households | $66,346 | $90,675 |
| Non Families | $46,853 | $61,540 |
Average Income
Median Household Income
Poverty Rate