847 Area Code 🌍☎️

Northbrook is a village in Cook County, Illinois, located in Chicago's upscale North Shore region, with a 2020 population of 35,222. Originally incorporated in 1901 as Shermerville to honor Frederick Schermer, who donated land for the first train station, the village was renamed Northbrook in 1923 to improve its public image, taking its name from the West Fork of the North Branch of the Chicago River that runs through it. The community's population surged from 3,319 in 1950 to 30,735 by 1980 following post-World War II suburbanization, and it became the first Illinois community not bordering Lake Michigan to filter Lake Michigan water for public use. Notable landmarks include Glenbrook North High School (founded in 1953), Northbrook Court shopping mall, the Ed Rudolph Velodrome, the Chicago Curling Club, and the Northbrook Public Library. The village's early history was marked by Potawatomi settlement until the 1833 Treaty of Chicago, followed by pioneer settlement led by Connecticut native Joel Sterling Sherman in the 1830s. Roselle is a suburb of Chicago located in both DuPage County and Cook County, Illinois, with a population of 22,756 as of the 2025 census. Incorporated as a bedroom community in 1922, the village was named after Rosell Hough, a son of early settler Deacon Elijah Hough who arrived in 1837 and returned in 1868 to establish the Illinois Linen Company and serve as president of the Chicago and Pacific Railroad Company. Spanning 5.61 square miles, Roselle features notable hydrological landmarks including Goose Lake, Spring Creek, and Turner Pond, with a population density of 4,084 inhabitants per square mile. The village's economy centers on three main commercial zones along Lake Street (U.S. Route 20), Park Street and Irving Park Road (Illinois Route 19), and the Main Street Station development along the Soo Line Railroad tracks. With a median household income of $92,470 and only 4.4% of residents below the poverty line, Roselle is characterized as an affluent suburban community with strong commuter rail access to Chicago. Elk Grove Village is a planned suburban community located in Cook and DuPage Counties, Illinois, approximately 22 miles northwest of Chicago, with a 2020 population of 32,812 that was incorporated on July 17, 1956. Positioned directly adjacent to O'Hare International Airport along the Golden Corridor, the village is economically significant to the Chicago metropolitan area due to its massive industrial park on the eastern border, which ranks as the second-highest scoring American industrial park according to Benchmarkia. The village was originally developed by Centex Corporation with separated residential and industrial zones and served by major Interstate highways including I-90, I-290, I-355, and Route 53, with future connectivity expected from the I-490 Western O'Hare Bypass. Prior to its 1956 incorporation, the land was predominantly agricultural with German immigrant farmers whose names are memorialized in local street names, and the area was ceded to the United States through the 1833 Treaty of Chicago with the Potawatomi Nation. Elk Grove Village's planned growth doubled its size during the 1960s, with most land between O'Hare Airport and I-290/IL-53 developed by the end of that decade as new roads, schools including Rupley Elementary, and parks were added to support expansion.