
Washburn
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 0.722
- State:
- Illinois
Washburn is a village located in Marshall County, Illinois. Washburn has a 2025 population of 1,011. Washburn is currently declining at a rate of -0.39% annually and its population has decreased by -2.13% since the most recent census, which recorded a population of 1,033 in 2020.
The average household income in Washburn is $84,120 with a poverty rate of 8.97%. The median age in Washburn is 38.5 years: 38.4 years for males, and 38.6 years for females.