
St. Joseph
- County:
- Champaign County
- County Seat:
- No
- Area (mi²):
- 2.083
- State:
- Illinois
St. Joseph is a village located in Champaign County, Illinois. St. Joseph has a 2025 population of 3,598. St. Joseph is currently declining at a rate of -1.07% annually and its population has decreased by -5.19% since the most recent census, which recorded a population of 3,795 in 2020.
The average household income in St. Joseph is $126,661 with a poverty rate of 4.3%. The median age in St. Joseph is 39.9 years: 35.5 years for males, and 41.9 years for females.