The La Grange Highlands is an unincorporated residential community located immediately south of the Village of La Grange and west of the City of Countryside. It is in Lyons Township, Cook County, IL. The Highlands covers an area of about 600 acres. It is one of the largest unincorporated areas in Cook County. The community received its name Highlands because of it's high elevation. It is 690 ft. above sea level, 90 feet higher than Chicago's loop, and 20 ft. higher than the Village of La Grange.