North Chicago

North Chicago,

industrial city (1990 pop. 34,978), Lake co., NE Ill.; inc. 1909. Its economy is closely intertwined with the neighboring city of WaukeganWaukegan
, residential and industrial city (1990 pop. 69,392), seat of Lake co., NE Ill., on Lake Michigan; inc. 1859. It has a good harbor and is the first port of call in Illinois on the St. Lawrence Seaway route.
..... Click the link for more information.
, which has a harbor on Lake Michigan. Pharmaceuticals, medical diagnostic-testing equipment, chemicals, steel, and automobile parts are among the many manufactures. A sit-down strike at a steel plant there in 1937 led to a U.S. Supreme Court decision (1939) ruling such strikes illegal. Naval Station Great Lakes, the U.S. navy's main training center for naval recruits, is adjacent to the city.