Where Is Area Code 630?
Area code 630 serves the western and southwestern suburbs of Chicago in northeastern Illinois. Naperville is the primary city associated with area code 630. Area code 630 lies in the Great Lakes region and uses Central Time.
Area code 630 covers much of DuPage County and portions of Cook, Kane, Kendall, and Will counties. Major communities include Aurora, Batavia, Downers Grove, Elmhurst, Geneva, Naperville, St. Charles, and Wheaton.
The Fox River passes through Aurora, Batavia, Geneva, and St. Charles. Fermilab is in Batavia, and the Morton Arboretum is in Lisle.
Cities and Communities in the 630 Area Code
- Addison, DuPage County
- Aurora, DuPage, Kane, Kendall, and Will counties
- Bartlett, Cook, DuPage, and Kane counties
- Batavia, Kane County
- Bensenville, DuPage County
- Bloomingdale, DuPage County
- Bolingbrook, DuPage and Will counties
- Carol Stream, DuPage County
- Clarendon Hills, DuPage County
- Darien, DuPage County
- Downers Grove, DuPage County
- Elburn, Kane County
- Elmhurst, Cook and DuPage counties
- Geneva, Kane County
- Glen Ellyn, DuPage County
- Glendale Heights, DuPage County
- Hanover Park, Cook and DuPage counties
- Hinsdale, Cook and DuPage counties
- Itasca, DuPage County
- Lemont, Cook and DuPage counties
- Lisle, DuPage County
- Lombard, DuPage County
- Montgomery, Kane and Kendall counties
- Naperville, DuPage and Will counties
- North Aurora, Kane County
- Oak Brook, Cook and DuPage counties
- Oakbrook Terrace, DuPage County
- Oswego, Kendall County
- Plano, Kendall County
- Plainfield, Will and Kendall counties
- Romeoville, Will County
- St. Charles, DuPage and Kane counties
- Sugar Grove, Kane County
- Villa Park, DuPage County
- Warrenville, DuPage County
- Wayne, DuPage County
- West Chicago, DuPage County
- Westmont, DuPage County
- Wheaton, DuPage County
- Willowbrook, DuPage County
- Winfield, DuPage County
- Wood Dale, DuPage County
- Woodridge, DuPage and Will counties
- Yorkville, Kendall County
History of Area Code 630
Area code 630 was created in 1996 through a geographic split of area code 708. Before the split, area code 708 covered a broad suburban area around Chicago. The new code separated many western suburbs into their own numbering area.
Area code 331 was introduced in 2007 as an overlay for area code 630. Area code 331 uses the same geographic territory and provides additional telephone numbers without changing the 630 boundary. The 630 and 331 overlay requires ten-digit dialing for local calls.
Key Facts About Area Code 630
- Area code 630 is an Illinois geographic area code, and Naperville is its primary city.
- Area code 630 is located in the U.S. Census Great Lakes region.
- Area code 630 uses Central Time.
- Area code 630 was created in 1996 as a split from area code 708.
- Area code 331 has overlaid area code 630 since 2007.
- Area code 630 covers parts of Cook, DuPage, Kane, Kendall, and Will counties.
- Fermi National Accelerator Laboratory is located in Batavia, Illinois, within the area code 630 region.
- The Morton Arboretum is located in Lisle, Illinois, within the area code 630 region.
Frequently Asked Questions
What state is area code 630 in?
Area code 630 is in Illinois.
What major cities use area code 630?
Major cities using area code 630 include Naperville, Aurora, Elmhurst, Wheaton, Downers Grove, and St. Charles.
What time zone is area code 630 in?
Area code 630 is in Central Time.
Is area code 630 a toll-free number?
No. Area code 630 is a geographic area code, not a toll-free code.