Hamilton County's estimated 2025 population is 384,009 with a growth rate of 1.64% in the past year according to the most recent United States census data. Hamilton County is the 4th largest county in Indiana. The 2010 population was 276,499 and has seen a growth of 38.88% since that time.
Data after 2023 is projected based on recent change
The racial composition of Hamilton County includes 81.61% White, 6.75% Asian, 4.2% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 291,484 | 81.61% |
| Asian | 24,099 | 6.75% |
| Two or more races | 21,374 | 5.98% |
| Black or African American | 14,994 | 4.2% |
| Other race | 4,682 | 1.31% |
| Native American | 349 | 0.1% |
| Native Hawaiian or Pacific Islander | 194 | 0.05% |
Married
Widowed
Divorced
Separated
Never Married
Hamilton County's average per capita income is $71,486. Household income levels show a median of $117,957. The poverty rate stands at 4.35%.
Name | Median | Mean |
|---|---|---|
| Married Families | $156,721 | $196,596 |
| Families | $142,701 | $181,797 |
| Households | $117,957 | $156,318 |
| Non Families | $59,928 | $79,133 |
Average Income
Median Household Income
Poverty Rate