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is an outer suburb/exurb of the Greater Chicago area, and is an incorporated city in Lake County, Illinois, United States. The population was 35,918 at the 2000 census.
North Chicago hosts the Great Lakes Naval Training Center and the manufacturing headquarters of Abbott Laboratories.
The city is also home to Rosalind Franklin University of Medicine and Science, which houses the Chicago Medical School and the Dr. William M. Scholl College of Podiatric Medicine.
According to the United States Census Bureau, the city has a total area of 7.8 square miles (20.3 km²), of which, 7.8 square miles (20.3 km²) of it is land and 0.13% is water.
The city is picturesquely situated on Lake Michigan. Most of its territory drains directly to the Lake, but the western region drains to the North Branch of the Chicago River, and ultimately, since the engineering projects of the 19th century, to the Illinois and thence to the Mississippi River and the Gulf of Mexico.
North Chicago is served by the RTA Metra commuter rail system, with a stop on the Chicago - Kenosha Union Pacific line around the latitude of 17th Street, just east of Sheridan Road also known as IL-137.