
Lyndon
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 3.601
- State:
- Kentucky
Lyndon is a city located in Jefferson County, Kentucky. Lyndon has a 2025 population of 10,844. Lyndon is currently declining at a rate of -0.29% annually and its population has decreased by -1.47% since the most recent census, which recorded a population of 11,006 in 2020.
The average household income in Lyndon is $85,605 with a poverty rate of 7.85%. The median age in Lyndon is 35.2 years: 32.6 years for males, and 36.2 years for females.