St. Joseph County's estimated 2025 population is 273,980 with a growth rate of 0.21% in the past year according to the most recent United States census data. St. Joseph County is the 5th largest county in Indiana. The 2010 population was 266,799 and has seen a growth of 2.69% since that time.
Data after 2023 is projected based on recent change
The racial composition of St. Joseph County includes 72.14% White, 12.61% Black or African American, 3.17% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 196,634 | 72.14% |
| Black or African American | 34,362 | 12.61% |
| Two or more races | 25,035 | 9.18% |
| Other race | 8,632 | 3.17% |
| Asian | 6,953 | 2.55% |
| Native American | 753 | 0.28% |
| Native Hawaiian or Pacific Islander | 205 | 0.08% |
Married
Widowed
Divorced
Separated
Never Married
St. Joseph County's average per capita income is $45,599. Household income levels show a median of $64,885. The poverty rate stands at 14.58%.
Name | Median | Mean |
|---|---|---|
| Married Families | $100,501 | $127,662 |
| Families | $84,866 | $109,220 |
| Households | $64,885 | $89,361 |
| Non Families | $39,644 | $56,186 |
Average Income
Median Household Income
Poverty Rate