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.
Beach Park is a village in Benton and Waukegan townships of Lake County, Illinois, United States. Per the 2020 census, the population was 14,249.
Gages Lake is a census-designated place (CDP) in Warren Township, Lake County, Illinois, United States. The population was 10,637 at the 2020 census.
Grandwood Park is a census-designated place (CDP) in Warren Township, Lake County, Illinois, United States. Per the 2020 census, the population was 5,297.
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.
Gurnee is a village and suburb in Lake County, Illinois, United States. Its population was 30,706 as of the 2020 census. It borders the city of Waukegan, and is a popular tourist attraction within the Chicago metropolitan area.
Libertyville is a village in Lake County, Illinois, United States, and a northern suburb of Chicago. It is located 5 miles (8 km) west of Lake Michigan along the Des Plaines River. The 2020 census population was 20,579. It is part of Libertyville Township, which includes the village, neighboring Green Oaks, and portions of Vernon Hills, Mundelein, unincorporated Waukegan and Lake Forest, and part of Knollwood CDP. Libertyville neighbors these communities as well as Gurnee to the north and Grayslake to the northwest. Libertyville is about 40 miles north of the Chicago Loop and is part of the United States Census Bureau's Chicago combined statistical area (CSA).
Long Lake is an unincorporated community and census-designated place (CDP) in Lake County, Illinois, United States. Per the 2020 census, the population was 3,663.
Venetian Village is a census-designated place (CDP) in Lake County, Illinois, United States. Per the 2020 census, the population was 2,761.
Area codes 847 and 224 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Illinois. The numbering plan area (NPA) comprises the northeastern part of Illinois and many northern suburbs of Chicago. This includes most of Lake County, the northern part of Cook County, the northern part of Kane County, and a small part of McHenry County.
The North Suburban Conference (NSC) is an extra-curricular conference of eight high schools located in Lake County, Illinois, in the northern suburbs of Chicago. All of the schools are members of the Illinois High School Association (IHSA).
Knollwood is an unincorporated community and census-designated place (CDP) in Lake County, Illinois, United States. Per the 2020 census, the population was 2,221. It is located within Shields Township and Libertyville Township. Knollwood shares a ZIP Code with the neighboring village of Lake Bluff, and children attend Lake Bluff schools. The residents of Knollwood were served by the Knollwood Fire Department until October 2018, after the trustees of the Rockland Fire Protection District ended their relationship with the department. Residents now receive fire protection from the Libertyville and Lake Forest fire departments. Police protection is provided by the Lake County Sheriff's Department.
The Warren-Newport Public Library is located in Gurnee, Illinois. The library serves 60,000 people within a 55-square-mile (140 km2) area that covers all or most of Warren Township and Newport Township, Illinois. The library is a member of the Reaching Across Illinois Library System (RAILS).
Northfield Township is one of 29 townships in Cook County, Illinois, USA. As of the 2020 census, its population was 91,565. The township office is located at 2550 Waukegan Road in Glenview. The township was established on April 2, 1850.
Libertyville Township is a township in Lake County, Illinois, United States. 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.
Newport Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 6,770. It includes most parts of the villages of Old Mill Creek and Wadsworth, as well as smaller portions of the villages of Antioch, Beach Park, and a corner of the city of Waukegan. The unincorporated communities of Rosecrans and Russell are also within the township, and the unincorporated community of Millburn is also located partially within Newport Township.
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.
Waukegan Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 90,893.
Avon Township is a township in Lake County, Illinois, USA. As of the 2010 census, its population was 65,001.
Wildwood is an unincorporated community along Belvidere Road just east of U.S. Route 45 in Lake County, Illinois. Wildwood is part of the Gages Lake census-designated place and is bordered by Gages Lake Road to the north, Gurnee to the northeast and east, Libertyville to the south, and Grayslake to the west.
