630 Area Code

The 630 area code is a telephone area code in the North American Numbering Plan (NANP) serving the western suburbs of Chicago, Illinois, USA. Introduced in 1996 as a split from the 708 area code, the 630 area code now exists as an overlay with 331 due to the increasing demand for phone numbers. It covers a wide range of residential, business, and mobile services across the Chicagoland region.

Understanding the 630 Area Code

The 630 area code was created to handle the fast population and business growth in the Chicago metropolitan area. In 2007, the 331 area code was introduced as an overlay, requiring 10-digit dialing for local calls within the region.

630 Area Code Map and Location

The 630 area code map covers much of the Chicago suburbs in DuPage County and parts of surrounding counties, including Kane, Will, and Kendall.

Major Cities and Regions in the 630 Area Code

  • Aurora
  • Naperville
  • Wheaton
  • Downers Grove
  • Glen Ellyn
  • Lisle
  • St. Charles
  • Bolingbrook
  • Elmhurst
  • Lombard

ZIP Codes Covered by the 630 Area Code

Some of the key ZIP codes served by the 630 area code include:

  • 60540 - Naperville, IL
  • 60187 - Wheaton, IL
  • 60563 - Naperville, IL
  • 60532 - Lisle, IL
  • 60148 - Lombard, IL
  • 60137 - Glen Ellyn, IL
  • 60174 - St. Charles, IL
  • 60559 - Westmont, IL

Time Zone

The 630 area code is located in the Central Time Zone (CT).

  • Standard Time: UTC -6
  • Daylight Saving Time: UTC -5

Dialing, Phone & Service Details

  • Overlay Codes: 331
  • Local dialing: 10-digit dialing required
  • Long-distance within the USA: Dial 1 + 630 + 7-digit number
  • International calls: Dial exit code + 1 + 630 + number
  • Services: Landline, mobile, VoIP, business

What area code is 630? / Where's area code 630?

What area code is 630? � The 630 area code is a telephone code serving the western suburbs of Chicago, Illinois.

Where's area code 630? � It is located in the Central Time Zone (CT) and covers Aurora, Naperville, Wheaton, Downers Grove, Glen Ellyn, Lombard, Lisle, Elmhurst, and St. Charles.

Frequently Asked Questions (FAQ) about 630 Area Code

What is the 630 area code?

The 630 area code serves the western suburbs of Chicago, Illinois, including Naperville, Aurora, and Wheaton.

When was the 630 area code created?

The 630 area code was created in 1996 as a split from 708.

Where is area code 630 located?

It covers much of DuPage County and parts of Kane, Will, and Kendall counties in the Chicago suburbs.

Does 630 have an overlay?

Yes, 630 is overlaid with area code 331.

What time zone is 630 in?

The 630 area code is in the Central Time Zone (UTC -6 / UTC -5 in DST).

630 Area Code