Mettawa is a village in Lake County, Illinois, United States dedicated to preserving open lands and low-density residential development. The village maintains trails for pedestrian, bicycle and equestrian usage. Five forest preserves within the Lake County Forest Preserve District are located within village boundaries: including Old School Forest Preserve, Grainger Woods Conservation Preserve, MacArthur Woods, Captain Daniel Wright Woods and the former home (and grounds) of Adlai E. Stevenson II.
Mettawa's population was 367 at the 2000 census, although population is estimated to have increased to approximately 485 residents since that time.
Adjacent communities include Lake Forest, Lincolnshire, Vernon Hills, Libertyville, and Green Oaks.