
Bismarck
- County:
- Vermilion County
- County Seat:
- No
- Area (mi²):
- 0.743
- State:
- Illinois
Bismarck is a village located in Vermilion County, Illinois. Bismarck has a 2025 population of 553. Bismarck is currently declining at a rate of -1.07% annually and its population has decreased by -5.15% since the most recent census, which recorded a population of 583 in 2020.
The average household income in Bismarck is $76,669 with a poverty rate of 10.26%. The median age in Bismarck is 42.5 years: 42.8 years for males, and 41.7 years for females.