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. Its northern boundary is the Wisconsin state line.
Grayslake is a village in Lake County, Illinois, United States. It is located in the Chicago metropolitan area, about 40 miles (64 km) north of Chicago's downtown, 14 miles (23 km) west of Lake Michigan, and 15 miles (24 km) south of the Wisconsin border. The village's population at the 2020 census was 21,248.
Hainesville is a village in Avon Township, Lake County, Illinois, United States. Per the 2020 census, the population was 3,546. Hainesville has the distinction of being the oldest incorporated community within Lake County.
Lake Villa Township is located in northwestern Lake County, Illinois. The population was 40,276 at the 2010 census.
Oakwood Township is a township in Vermilion County, Illinois, USA. As of the 2010 census, its population was 3,507 and it contained 1,518 housing units.
Antioch Township is located in Lake County, Illinois, United States. The population was 27,745 at the 2010 census.
Cuba Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 16,826. Cuba Township was originally named Troy Township, but was renamed to Cuba in support of the López Expedition of 1851, when it was discovered the township name of Troy was already taken.
Ela Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 42,654.
Fremont Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 32,337.
Grant Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 26,523. Grant Township changed its name from Goodale Township on March 8, 1867.
Libertyville Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 53,139. The village of Libertyville is part of the township, as are parts of Green Oaks, Lake Bluff, Lake Forest, Mettawa, Mundelein, North Chicago, Rondout, Vernon Hills and Waukegan.
Moraine Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 34,129. Moraine Township was originally called Deerfield Township, but the name was changed on October 29, 1998.
Shields Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 39,062. The Naval Station Great Lakes is located in this township.
Vernon Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 67,095. The name "Vernon Township" comes from George Washington's estate, Mount Vernon.
Warren Township is a township in Lake County, Illinois, USA. As of the 2020 census, its population was 65,883. The cities of Gurnee, Park City, and Grayslake lie within its borders. The township was established in 1850 by settlers who came from the town of Warren, New York. Both were named in honor of Major General Joseph Warren, killed at the Battle of Bunker Hill.
Wauconda Township is a township in Lake County, Illinois, USA. As of the 2020 census, its population was 23,628.
Sangamon Township is a township in Piatt County, Illinois, USA. As of the 2010 census, its population was 2,357 and it contained 929 housing units.
Vandalia Township is one of twenty townships in Fayette County, Illinois, USA. As of the 2010 census, its population was 6,629 and it contained 3,115 housing units.
Murphysboro Township is one of sixteen townships in Jackson County, Illinois, USA. As of the 2010 census, its population was 10,563 and it contained 5,174 housing units.
Benton Township is one of twelve townships in Franklin County, Illinois. As of the 2010 census, its population was 8,972 and it contained 4,220 housing units.
