
Lily Lake
- County:
- DeKalb County
- County Seat:
- No
- Area (mi²):
- 2.717
- State:
- Illinois
Lily Lake is a village located in DeKalb County, Illinois. Lily Lake has a 2025 population of 1,045. Lily Lake is currently growing at a rate of 0.19% annually and its population has increased by 0.97% since the most recent census, which recorded a population of 1,035 in 2020.
The average household income in Lily Lake is $172,672 with a poverty rate of 0.56%. The median age in Lily Lake is 44.2 years: 44.5 years for males, and 44.1 years for females.