North Chicago is a city in Lake County, Illinois, United States, and a suburb of the Chicago metropolitan area. The population was 32,574 at the 2010 census.North Chicago hosts the Great Lakes Naval Training Center and the headquarters of Abbott Laboratories and AbbVie.The city is also home to Rosalind Franklin University of Medicine and Science, which houses the Chicago Medical School, the Dr. William M. Scholl College of Podiatric Medicine, the College of Pharmacy, the College of Health Professions, and the School of Graduate and Postdoctoral Studies.