Area Code 630 History:
Area code 630 was put into service. Area code 630 was created from a split of area code 708. In 2007 area code 630 was overlaid with area code 331.
Counties in Illinois within area code 630 include:
DuPage County, Kane County, Cook County, Will County, and Kendall County.
Major cities or places in Illinois within area code 630 include:
Area codes 331 and 630 serve many of the western suburbs of Chicago including the cities and communities of Aurora, Bartlett, Batavia, Bensenville, Bloomingdale, Bolingbrook, Carol Stream, Darien, Downers Grove, Elmhurst, Glen Ellyn, Glendale Heights, Hanover Park, Lisle, Lombard, Naperville, Roselle, St. Charles, Streamwood, Villa Park, West Chicago, Westmont, Wheaton and Woodridge in addition to many smaller communities within the area codes 331 and 630 service area.