Northbrook is a village in Cook County, Illinois, United States, located about 25 miles north of downtown Chicago. It is a suburb of Chicago and is known for its affluent residential areas and high-quality schools. It has a population of approximately 33,000 residents and covers an area of 13.25 square miles. The village offers a variety of recreational amenities, including parks, golf courses, and sports fields. Northbrook is also home to several corporate headquarters and is known for its strong business community.