
Lake Bluff
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 4.076
- State:
- Illinois
Lake Bluff is a village located in Lake County, Illinois. Lake Bluff has a 2025 population of 5,483. Lake Bluff is currently declining at a rate of -0.45% annually and its population has decreased by -2.26% since the most recent census, which recorded a population of 5,610 in 2020.
The average household income in Lake Bluff is $297,923 with a poverty rate of 2.17%. The median age in Lake Bluff is 44.9 years: 43.4 years for males, and 46.8 years for females.