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Area Code 708 serves parts of Illinois, primarily encompassing suburban areas southwest of Chicago. It was initially established in 1989, emerging from the split of the 312 area code, which originally covered all of Chicago and its surrounding regions. This change was necessitated by the rapid population growth and increasing demand for phone numbers in the expanding suburbs.

The 708 area code includes several notable suburbs such as Oak Park, Cicero, and Oak Brook, and it also covers portions of Cook and Will counties. The designation of this area code reflects its function in integrating burgeoning communities that contribute significantly to the greater Chicago metropolitan area's economy and culture.

708 is categorized within the North American Numbering Plan (NANP) and operates with a standard 10-digit dialing format. The area code continues to serve a diverse population, with telecommunications infrastructure evolving to support various technologies, including mobile services and VoIP. As a result, residents and businesses in the 708 area benefit from substantial connectivity options amidst the digital landscape.

The region represented by area code 708 features a mix of residential neighborhoods, commercial districts, and extensive park and recreational areas, all supported by robust telecommunication services. This blend, combined with its proximity to Chicago, distinguishes the 708 area code within the broader context of Illinois telecommunications.