St. Joseph County, Indiana Demographics 2026
St. Joseph County, Indiana has a population of 273,040, the 5th most populous county in Indiana. The median household income is $66,868 and the median home value is $192,800. The poverty rate is 14.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
St. Joseph County Quick Facts
How St. Joseph County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 272,574 | 273,040 | +0.2% |
| Median household income | $64,885 | $66,868 | +3.1% |
| Median home value | $179,800 | $192,800 | +7.2% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in St. Joseph County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| South Bend | 103,085 | $55,786 | 20.8% | $140,400 |
| Mishawaka | 51,021 | $54,291 | 16.4% | $155,500 |
| Granger | 30,321 | $123,318 | 4.7% | $331,100 |
| Notre Dame | 6,890 | $19,886 | 49.2% | N/A |
| Osceola | 2,593 | $66,503 | 14.5% | $196,900 |
| Walkerton | 2,115 | $65,340 | 6.4% | $149,200 |
| New Carlisle | 1,998 | $66,824 | 4.5% | $186,700 |
| North Liberty | 1,775 | $75,047 | 8.3% | $162,100 |
| Roseland | 1,175 | $47,917 | 28.8% | $122,500 |
| Lakeville | 735 | $62,772 | 17.5% | $136,500 |
| Indian Village | 97 | $81,875 | 10.3% | $190,600 |
Explore Indiana Rankings
Population Overview
St. Joseph County is located in Indiana with a total population of 273,040. It is the 5th most populous county out of 92 in Indiana. The county encompasses 11 Census-designated places.
Age Demographics
The median age in St. Joseph County is 36.7 years. This is 4% lower than the state median of 38.1 years.
Economy, Income & Housing
The median household income in St. Joseph County is $66,868. This is 7% lower than the state median of $71,957. It is also 17% lower than the national median of $80,734. The poverty rate stands at 14.2%. This is 15% higher than the state poverty rate of 12.3%. The unemployment rate is 5.2%. This is 22% higher than the state rate of 4.3%. The median home value is $192,800. Housing costs are 12% lower than the state median of $218,200. With a home-value-to-income ratio of just 2.9x, St. Joseph County is one of the most affordable housing markets in the area. 69.0% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 70.5%.
Race & Ethnicity
The largest racial or ethnic group in St. Joseph County is White (non-Hispanic), making up 68.9% of the population. Black or African American residents account for 12.3%.
Education
33.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 14% higher than the state rate of 29.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.5%.
Data Sources & Methodology
All figures for St. Joseph County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Indiana and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of St. Joseph County, Indiana?
St. Joseph County has a population of 273,040, making it the 5th most populous county in Indiana.
What is the median income in St. Joseph County?
The median household income in St. Joseph County is $66,868 with a poverty rate of 14.2%.
How many cities are in St. Joseph County, Indiana?
St. Joseph County contains 11 Census-designated places.