
Walnut
- County:
- Bureau County
- County Seat:
- No
- Area (mi²):
- 0.799
- State:
- Illinois
Walnut is a village located in Bureau County, Illinois. Walnut has a 2025 population of 1,259. Walnut is currently declining at a rate of -0.79% annually and its population has decreased by -3.82% since the most recent census, which recorded a population of 1,309 in 2020.
The average household income in Walnut is $70,362 with a poverty rate of 8.1%. The median age in Walnut is 36.9 years: 39.8 years for males, and 35.9 years for females.