St. Joseph, IL
Population 3,833 · Illinois
About St. Joseph, IL
St. Joseph is a small community in Illinois with a population of 3,833 residents. The median household income is $114,594 per year, which is above the national average. The median age in St. Joseph is 39.9 years.
Housing in St. Joseph has a median home value of $257,400 and median monthly rent of $969. Of the 1,511 total housing units, the majority are owner-occupied, with 1,289 owner-occupied and 214 renter-occupied units.
The unemployment rate in St. Joseph is 0.7% and the poverty rate is 4.3%. 37.1% of residents hold a bachelor's degree or higher. The average commute time is 24.2 minutes.
How St. Joseph Ranks in Illinois
Cost of Living in St. Joseph, IL
Compared to national averages, St. Joseph has a median household income of $114,594 (52% above the national median of $75,149). Home values average $257,400, which is 5% above the national median. Monthly rent at $969 is 17% below the US average of $1,163. Within Illinois, St. Joseph's income is 53% above the state average of $75,072, and home values are 55% above the state median of $165,779.
Why Live in St. Joseph, IL?
St. Joseph offers a strong local economy with a median household income of $114,594, well above the national average, and rent that’s lower than the national average at $969/month, and a strong job market with an unemployment rate of just 0.7%. Additionally, the city features a well-educated community where 37.1% of residents hold a bachelor’s degree or higher, and a low poverty rate of 4.3%, better than the national average, and short commute times averaging just 24.2 minutes.
St. Joseph has a population of 3,833 with a median age of 39.9 years. Compare St. Joseph with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near St. Joseph
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Oregon | 3,821 | $69,632 | $140,100 | Compare |
| Dwight | 3,794 | $67,712 | $143,200 | Compare |
| Red Bud | 3,789 | $68,051 | $170,300 | Compare |
| Rochester | 3,784 | $112,689 | $241,900 | Compare |
| Morrison | 3,781 | $67,580 | $117,300 | Compare |
| Eldorado | 3,762 | $39,766 | $68,600 | Compare |
| Aledo | 3,753 | $62,829 | $140,000 | Compare |
| Dupo | 3,914 | $57,899 | $109,000 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about St. Joseph
What is the population of St. Joseph, IL?
The population of St. Joseph, IL is 3,833 according to the latest Census data.
What is the median household income in St. Joseph?
The median household income in St. Joseph, IL is $114,594 per year.
What is the median home value in St. Joseph?
The median home value in St. Joseph, IL is $257,400.
What is the average rent in St. Joseph?
The median monthly rent in St. Joseph, IL is $969.
What is the unemployment rate in St. Joseph?
The unemployment rate in St. Joseph, IL is 0.7%.