Waukegan, a city and the county-seat of Lake county, Illinois, U.S.A., on the W. shore of Lake Michigan, about 36 m. N. of Chicago. Pop. (1890) 4915; (1900) 9426, of whom 2506 were foreign-born; (1910 census) 16,069. It is served by the Elgin, Joliet & Eastern (of which it is a terminus) and the Chicago & North Western railways, by an interurban electric line, and by lake steamers. In 1880 the United States government under - took the formation of an artificial harbour with a channel 13 ft. deep, and in1902-1904the depth was increased to 20 ft. The main portion of the city is situated about 100 ft. above the level of the lake. There are a number of parks and mineral springs, and along the lake front a fine driveway, Sheridan Road. The city is a residential suburb of Chicago. The principal buildings are the Federal building, the Court House, a Carnegie library, the Masonic Temple and McAlister Hospital. At the village of North Chicago (pop. in 1900, Ir50), about 3 m. S. of Waukegan, there is a United States Naval Training Station. Waukegan is the commercial centre of an agricultural and dairying region, and has various manufactures. The total value of the factory product in 1905 was $3,961,513. Waukegan was settled about 1835, and until 1849 was known as Little Fort, which is supposed to be the English equivalent of the Indian name Waukegan. It became the county-seat of Lake county in 1841, was in - corporated as a town in 1849, and first chartered as a city in 1859.