Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40 percent of all residents of Illinois live within Cook County. As of 2020, the population was 5,275,541. The county seat is Chicago, the most populous city in Illinois and the third most populous city in the United States. The county is at the center of the Chicago metropolitan area.
Hanover Park is a village in Cook and DuPage counties in the U.S. state of Illinois, a suburb of Chicago. The population was 37,470 at the 2020 census. Ontarioville is a neighborhood within the village.
Schaumburg is a village located mostly in Cook County and partly in DuPage County in northeastern Illinois, United States. Per the 2020 Census, the population was 78,723, making Schaumburg the most populous incorporated village in the United States. Schaumburg is around 28 miles (45 km) northwest of the Chicago Loop and 10 miles (16 km) northwest of O'Hare International Airport. It is part of the Golden Corridor.
Streamwood is a village in Cook County, Illinois, United States. Per the 2020 census, the population was 39,577. It is a northwest suburb of Chicago, and is a part of the Chicago metropolitan area.
Yorkville is a city within the Chicago Metropolitan Area and is the county seat of Kendall County, Illinois, United States. It is a southwest suburb/exurb of Chicago, Illinois. The population was 22,594 as of the 2020 census.
The Chicago metropolitan area, also referred to as the Greater Chicago Area and Chicagoland, is the largest metropolitan statistical area in the U.S. state of Illinois, containing the City of Chicago along with its surrounding suburbs and satellite cities. Encompassing 10,286 square mi (28,120 km2), the metropolitan area includes the city of Chicago, its suburbs and hinterland, that span 14 counties across northeast Illinois, northwest Indiana, and southeast Wisconsin. The MSA had a 2020 census population of 9,618,502 and the combined statistical area which spans up to 19 counties had a population of nearly 10 million people. The Chicago area is the third largest metropolitan area in the United States and the fourth largest metropolitan area in North America and the largest within the Midwest, and the largest in the Great Lakes megalopolis. Its urban area is one of the forty largest in the world.
Illinois Route 47 (IL 47) is a 169.76-mile-long (273.20 km) largely rural north–south state highway that runs from the Wisconsin state border at Highway 120 near Hebron, to IL 10, just south of Interstate 72 (I-72) near Seymour. IL 47 is in primarily rural areas but in several suburbs of Chicago, such as Woodstock and Huntley, traffic can be heavily congested.
Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. The numbering plan area is completely surrounded by area code 773, which serves the rest of Chicago. Both area codes form an overlay complex with area code 872. 312 is an enclave area code, and is roughly bounded by North Avenue on the north, Western Avenue on the west, and 35th Street on the south, with Lake Michigan to the east. In terms of geographic area covered, 312 is one of the smallest area codes in the nation, encompassing only a few square miles.
Area codes 708 and 464 are telephone area codes in the North American Numbering Plan (NANP) for the southern and western suburbs of Chicago in the U.S. state of Illinois. The numbering plan area comprises most of western and southern Cook County, and eastern and southern Will County.
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 Illinois Technology and Research Corridor is a region of commerce and industry located along Interstate 88 in the Chicago metropolitan area, primarily in Cook, DuPage, Kane, and DeKalb Counties. The corridor is home to the headquarters or regional centers for many Fortune 1000 companies, several office and industrial parks, colleges and universities, research and scientific institutions, medical centers, government centers, and abundant shopping, dining, lodging, and entertainment amenities. In addition to the I-90 Golden Corridor, the I-94 Lakeshore Corridor, and the I-55 Industrial Corridor, the Illinois Technology and Research Corridor is one of the principal economic centers in suburban Chicago.
The 8th congressional district of Illinois is a congressional district in the U.S. state of Illinois that has been represented by Democrat Raja Krishnamoorthi since 2017.
The Golden Corridor is the area around the Jane Addams Memorial Tollway, formerly known as the Northwest Tollway, in the Chicago metropolitan area. Its name refers to the "gold" mine of economic profit for communities in the area. Several Fortune 500 company headquarters, office parks, industrial parks, exhibition and entertainment centers, medical facilities, hotels, shopping centers, and restaurants are in the Golden Corridor. With the exception of the O'Hare area of Chicago, all the communities in this region are part of a larger region known as the "Northwest Suburbs".
Hanover Township is one of 29 townships in Cook County, Illinois, USA and is located at the end of the county's panhandle. As of the 2020 census, its population was 100,092 and it contained 35,007 housing units.
Schaumburg Township is one of 29 townships in Cook County, Illinois, USA. As of the 2020 census, its population was 134,809. It is in the north west corner of Cook County.
Area code 872 is a telephone area code in the North American Numbering Plan for Chicago in the U.S. state of Illinois. It is an overlay code for a numbering plan area that comprises those of area codes 312 and 773. The overlay commenced service on November 7, 2009. Its overlay status means it is assigned only to new numbers in the area and not to existing numbers using the 312 and 773 area codes. It is the third overlay area code in the region and the tenth area code to serve northeast Illinois.
Area code 773 serves Chicago, Illinois, outside the Loop and the innermost neighborhoods.
Cook County Board of Commissioners 15th district is an electoral district for the Cook County Board of Commissioners. It is currently represented by Kevin B. Morrison, a Democrat.
