Lake County,
Illinois
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Lake County is situated in the northeastern corner of the U.S. state of Illinois, along the shores of Lake Michigan. As of the 2020 census, it has a population of 714,342, making it the third-most populous county in Illinois. Its county seat is Waukegan, the tenth-largest city in Illinois. The county is primarily suburban, with some urban areas and some rural areas. Due to its location, immediately north of Cook County, Lake County is one of the collar counties of the Chicago metropolitan area.
According to the 2010 census, Lake County is the second most wealthy county in Illinois by per capita income, after DuPage County. Additionally, Lake County ranks as the 27th wealthiest county in the nation. The lakefront communities of Lake Forest, Lake Bluff, and Highland Park are part of the affluent North Shore area.
Naval Station Great Lakes is located in the city of North Chicago. It is the United States Navy's Headquarters Command for training, and the Navy's only recruit training center.
