
Lake Forest Park
- County:
- King County
- County Seat:
- No
- Area (mi²):
- 3.517
- State:
- Washington
Lake Forest Park is a city located in King County, Washington. Lake Forest Park has a 2025 population of 12,606. Lake Forest Park is currently declining at a rate of -1.56% annually and its population has decreased by -7.35% since the most recent census, which recorded a population of 13,606 in 2020.
The average household income in Lake Forest Park is $190,473 with a poverty rate of 3.6%. The median age in Lake Forest Park is 42.8 years: 41.7 years for males, and 43.9 years for females.