
Lena
- County:
- Stephenson County
- County Seat:
- No
- Area (mi²):
- 2.651
- State:
- Illinois
Lena is a village located in Stephenson County, Illinois. Lena has a 2025 population of 2,604. Lena is currently declining at a rate of -1.14% annually and its population has decreased by -5.52% since the most recent census, which recorded a population of 2,756 in 2020.
The average household income in Lena is $92,696 with a poverty rate of 3.28%. The median age in Lena is 43.8 years: 40.5 years for males, and 45.1 years for females.