
Nilwood
- County:
- Macoupin County
- County Seat:
- No
- Area (mi²):
- 0.465
- State:
- Illinois
Nilwood is a town located in Macoupin County, Illinois. Nilwood has a 2025 population of 195. Nilwood is currently declining at a rate of -0.51% annually and its population has decreased by -2.5% since the most recent census, which recorded a population of 200 in 2020.
The average household income in Nilwood is $55,683 with a poverty rate of 13.57%. The median age in Nilwood is 52 years: 37.3 years for males, and 61.5 years for females.