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In the group of original North American area codes, established in 1947, all of the Chicago metropolitan area was part of numbering plan area 312, the rest of northern Illinois was 815, central Illinois was 217, and southern Illinois was 618. In 1957, area code 815 was split for the assignment of area code 309 to western central Illinois.
There are 102 counties in Illinois. The most populous of these is Cook County, the second-most populous county in the United States and the home of Chicago, while the least populous is Hardin County. The largest by land area is McLean County, while the smallest is Putnam County. Illinois's FIPS state code is 17 and its postal abbreviation is IL.
The present-day 926 prefix range only covers the southern and coastal portion of Orange County. This includes, Irvine, which originally had only ZIP Code, 92650. With the rapid growth of the city, however, it needed new codes, and it was eventually moved to the 927 range with Santa Ana. On July 1, 1996, the northern portion of Orange County ...
Metro East. The Metro East is an urban area in Southern Illinois, United States that contains the eastern and northern urban, suburban, and exurban areas across the Mississippi River from St. Louis, Missouri. It encompasses eight counties in the Greater St. Louis area and constitutes the second-most populous metropolitan area in Illinois.
Southern Illinois is a region of the U.S. state of Illinois comprising the southern third of the state, principally south of Interstate 70.Part of downstate Illinois, it is bordered by the two most voluminous rivers in the United States: the Mississippi below its connection with the Missouri River to the west and the Ohio River to the east and south, with the Wabash as a tributary.
FIPS code. 17-22697. GNIS feature ID. 2394626 [2] Website. cityofedwardsville.com. Edwardsville is a city in and the county seat of Madison County, Illinois, United States. [3] As of the 2020 census, the population was 26,808. The city was named in honor of Ninian Edwards, former Governor of the Illinois Territory.
The numbering plan areas and area codes of Illinois. Area codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois.The numbering plan area (NPA) comprises one hundred and twenty-six municipalities, such as Carbondale, Cairo, Belleville, East St. Louis, Edwardsville, Marion, O'Fallon, Alton, Mt. Vernon, Centralia, Herrin, Salem, Metropolis ...
UTC−5 (CDT) Congressional district. 12th. Website. www.franklincountyil.gov. Franklin County is a county in Southern Illinois. At the 2020 census, it had a population of 37,804. [1] The largest city is West Frankfort and the county seat is Benton. [2] This area of Southern Illinois is known locally as "Little Egypt".