Indiana Territory's at-large congressional district

Elk Grove Village is a village in Cook and DuPage counties in the U.S. state of Illinois. Located 20 miles (32 km) northwest of Chicago along the Golden Corridor, the Village of Elk Grove Village was incorporated on July 17, 1956. It is directly adjacent to O'Hare International Airport and is economically important to the Chicago metropolitan area due to its large industrial park, located on the eastern border of the village. The community is served by several Interstate highways including I-90, I-290/I-355/Route 53, and IL-390. Elk Grove is also expected to be served by the I-490 Western O'Hare Bypass upon completion of the project. The population was 33,127 at the 2010 census.

First Midwest Bancorp, Inc was headquartered in Chicago, Illinois, just east of O'Hare Airport. The company's predecessor traces back to Joliet, Illinois. From there the company has grown to serve many Chicago suburbs including northwest Indiana, downstate Illinois, southeast Wisconsin and the Quad Cities area including Iowa. First Midwest Bank is one of the largest banking institutions in the United States First Midwest Bank provides retail and business banking through more than 125 branches. In 2006, First Midwest acquired Bank Calumet for $307 million in cash, expanding its presence in the northwest Indiana area.On October 23, 2009, First Midwest Bank acquired certain deposits and loans of Westmont-based First DuPage Bank in a transaction facilitated by the Federal Deposit Insurance Corporation. First Midwest Bank agreed to assume all of the deposits - $230 million, and agreed to purchase approximately $260 million in assets at a discount of $32 million. First Midwest Bank entered into a loss-share transaction with the FDIC providing First Midwest Bank with protection from the FDIC for loan losses.On April 23, 2010, First Midwest Bank acquired Peotone Bank, taking on $130 million in assets and $127 million in deposits in a transaction facilitated by the Federal Deposit Insurance Corporation.On August 13, 2010, First Midwest acquired Palos Bank and Trust Company in a transaction facilitated by the Federal Deposit Insurance Corporation. Palos Bank and Trust Company had approximately $493.4 million in total assets and $467.8 million in total deposits, as of June 30, 2010. First Midwest Bank will pay the FDIC a premium of 1.0 percent to assume all of the deposits of Palos Bank and Trust Company. In addition to assuming all of the deposits of the failed bank, First Midwest Bank agreed to purchase essentially all of the assets. The FDIC and First Midwest Bank entered into a loss-share transaction on $343.8 million of Palos Bank and Trust Company's assets.First Midwest Bank assumed Waukegan Savings Bank's $77 million in deposits and $89 million in assets following its closure by the FDIC. The two Waukegan branches will open as First Midwest locations.The company acquired naming rights to the First Midwest Bank Amphitheatre in Tinley Park, Illinois.In 2021, First Midwest announced a merger with Old National Bank, combining the companies assets, retaining the Old National name and maintaining headquarters in Chicago and Evansville. This was finished in February 2022.

AerSale, Inc. is a global supplier of aftermarket commercial jet aircraft, engines, OEM used serviceable material, maintenance, repair & overhaul (MRO) and engineering services to passenger and cargo airlines, government entities, leasing companies, multinational OEMs and independent MROs.

AAR CORP. is a private provider of aviation services.AAR is headquartered in Wood Dale, Illinois, a Chicago suburb near O'Hare International Airport. The company employs 4,700 people worldwide.

Itasca () is a village in DuPage County, Illinois, United States. Per the 2020 Census, the population was 9,543. Located approximately 25 miles northwest of downtown Chicago, Itasca is close to O'Hare International Airport, major expressways and rail transportation. Itasca is home to a country club, a resort and shares a border with Medinah's legendary golf course. BusinessWeek rated Itasca as the Best Affordable Suburb in the state of Illinois.

Itasca is a station on Metra's Milwaukee District West Line in Itasca, Illinois. The station is 21.0 miles (33.8 km) away from Chicago Union Station, the eastern terminus of the line. In Metra's zone-based fare system, Itasca is in zone E. As of 2018, Itasca is the 91st busiest of Metra's 236 non-downtown stations, with an average of 555 weekday boardings.As of December 12, 2022, Itasca is served by 42 trains (20 inbound, 22 outbound) on weekdays, by all 24 trains (12 in each direction) on Saturdays, and by all 18 trains (nine in each direction) on Sundays and holidays. Itasca station is located near the Itasca Country Club. Daily parking is available for $1.50 per day along the south side of the tracks along Irving Park Road near Willow Street, and Schiller Street between 1st and Rush Streets. Permit parking is on the north side of the tracks on the corner of Orchard and Maple Streets. Permits are on a three-month basis and cost $50 for residents of Itasca and $75 for non-residents.

WGN (720 kHz) is a commercial AM radio station in Chicago, Illinois, featuring a talk radio format. WGN's studios are in the Chicago Loop, while the transmitter is in Elk Grove Village. WGN also features broadcasts of Chicago Blackhawks hockey and Northwestern University football and basketball. WGN is the only radio station owned by Nexstar Media Group, which primarily owns television stations. From 1924 to 2014, WGN was owned by Tribune Media, which also owned the Chicago Tribune, whose "World's Greatest Newspaper" slogan served as the basis for the WGN call sign. WGN is a clear channel, Class A station, broadcasting with the maximum power of 50,000 watts, and using a non-directional antenna. During daytime hours, near-perfect ground conductivity gives WGN at least secondary coverage to almost two-thirds of Illinois (as far south as Springfield) as well as large slices of Wisconsin, Indiana, Michigan and Iowa. During nighttime skywave hours, with a good radio, it is audible over most of the Eastern and Central United States and Central Canada. The station also streams its programming on its website and supplies podcasts as well. WGN is responsible for the activation of the Chicago metropolitan area Emergency Alert System when hazardous weather alerts, disaster area declarations, and child abductions are issued.

Elk Grove Township is one of 29 townships in Cook County, Illinois, USA. As of the 2010 census, its population was 92,905. Elk Grove Township formerly housed the United Airlines headquarters.

The American Academy of Pediatrics (AAP) is an American professional association of pediatricians, headquartered in Itasca, Illinois. It maintains its Department of Federal Affairs office in Washington, D.C.

The Ned Brown Forest Preserve, popularly known as Busse Woods, adjoining Elk Grove Village and Schaumburg in Illinois, is a 3,700-acre (1,500 ha) unit of the Cook County Forest Preserve system. It is named after Edward "Ned" Eagle Brown. A section of the northeast quadrant of the forest preserve is the Busse Forest Nature Preserve, which was registered as a National Natural Landmark in February 1980. Busse Forest Preserve (Busse Woods) was named for Cook County Commissioner William Busse in 1949.

Wood Dale is a city in Addison Township, DuPage County, Illinois, United States. Per the 2020 census, the population was 14,012.

Wood Dale is a station on Metra's Milwaukee District West Line in Wood Dale, Illinois. The station is 19.1 miles (30.7 km) away from Chicago Union Station, the eastern terminus of the line. In Metra's zone-based fare system, Wood Dale is in zone D. As of 2018, Wood Dale is the 83rd busiest of Metra's 236 non-downtown stations, with an average of 596 weekday boardings.As of December 12, 2022, Wood Dale is served by 42 trains (20 inbound, 22 outbound) on weekdays, by all 24 trains (12 in each direction) on Saturdays, and by all 18 trains (nine in each direction) on Sundays and holidays.