Population Demographics
As of 2025 the population of Forest Lake is 20,605. The population is expected to grow to 21,535 by 2030 - a growth rate of 0.89%.
The median age of Forest Lake residents is 40.
The diversity index of Forest Lake is 30.6, meaning that there is a 31% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.

