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The new area code was one of the first area codes not serving an entire state, but having the digit 0 in the middle position of the code. It was the only new area code created in Illinois between 1947 and the 1989 creation of area code 708. [2] In preparation of an overlay plan with the new area code 779, all calls from the 815 area needed to ...
With the depletion of new numbers in area codes 312 and 773, an overlay of both of them, area code 872, was created in November 2009, beginning ten-digit dialing within the city limits of Chicago. The remaining area without an overlay in the northern part of Illinois, 708, eventually received such with area code 464 taking effect on January 21 ...
In 1673, Louis Jolliet, along with Father Jacques Marquette, paddled up the Des Plaines River and camped on a huge earthwork mound, a few miles south of present-day Joliet. [6] Maps from Jolliet's exploration of the area showed a large hill or mound down river from Chicago, labeled Mont Joliet. [7] The mound has since been flattened due to mining.
Will County is one of the five collar counties of the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area. The portion of Will County around Joliet uses area codes 815 and 779, while 630 and 331 are for far northern Will County and 708 is for central and eastern Will County.
Joliet Township is located in Will County, Illinois. As of the 2010 census, its population was 87,398 and it contained 32,617 housing units. As of the 2010 census, its population was 87,398 and it contained 32,617 housing units.
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Each NPA was identified by a three-digit area code used as a prefix to each local telephone number. The United States received seventy-seven area codes, and Canada nine. The initial system of numbering plan areas and area codes was expanded rapidly during the ensuing decades, and established the North American Numbering Plan (NANP).
Troy Township is located in Will County, Illinois. As of the 2010 census, its population was 45,991 and it contained 17,522 housing units. [ 2 ] It contains the western edge of the city of Joliet and the entirety of the village of Shorewood .