Area code 630 covers Naperville and surrounding areas in Illinois. It was activated in 1996 as an overlay of area code 708. Today it shares its territory with overlay code 331. For the full picture, see all Illinois area codes.
| State | Illinois |
|---|---|
| Primary city | Naperville |
| Cities also served | Naperville, Aurora, Wheaton, Downers Grove, Elmhurst, Bolingbrook, Oak Brook, St. Charles |
| Time zone | Central (UTC-6 / UTC-5 DST) |
| Year established | August 3, 1996 |
| Original 1947 NPA? | No |
| Parent code | 708 |
| Overlay codes | 331 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 630
Area code 630 serves Chicago's western suburbs, primarily DuPage County and portions of Cook, Kane, Kendall, and Will counties, including the following cities and communities:
- Naperville
- Aurora
- Wheaton
- Downers Grove
- Elmhurst
- Bolingbrook
- Oak Brook
- St. Charles
Nearby area codes covering the same broader region include: 708, 847, 224, 331, 312, 773, 872.
How to Get a 630 Phone Number
There are three ways to get a phone number with the 630 area code, each suited to a different need:
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Browse 630 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 630 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 630 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 630 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 630 number. If you already have a 630 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Illinois sometimes can’t accept inbound ports of 630 numbers due to 911 routing rules.
Looking for a 630 number? 212areacode.com offers premium 630 numbers for Naperville, Illinois — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 630 numbers →
Frequently Asked Questions
Is the 630 area code still in use?
Yes. 630 is actively assigned to new phone lines in Chicago’s western suburbs, primarily DuPage County and portions of Cook, Kane, Kendall, and Will counties.
What is the difference between 630 and 331?
Today they share the same geographic territory in Illinois. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.
What is the parent area code of 630?
Area code 630 is an overlay of 708. Both codes serve the same region of Illinois.
Can I get a 630 number if I don't live in Illinois?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 630 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 630 a scam area code?
No. 630 is a legitimate, active area code for Chicago’s western suburbs, primarily DuPage County and portions of Cook, Kane, Kendall, and Will counties. Like any area code, scammers occasionally spoof 630 caller IDs, but the code itself is heavily used by real Illinois businesses, government offices, and residents.
What cities are covered by area code 630?
Area code 630 covers Chicago’s western suburbs, including Naperville, Aurora, Wheaton, Downers Grove, Elmhurst, Bolingbrook, Oak Brook, and St. Charles, primarily within DuPage County and parts of Cook, Kane, Kendall, and Will counties.
Why does area code 630 share its territory with area code 331?
Rapid suburban growth and the proliferation of mobile phones exhausted available numbers in the 630 area code by the mid-2000s. On October 7, 2007, area code 331 was introduced as an overlay to 630, serving the exact same geographic area and making ten-digit dialing mandatory for all local calls.
Where did area code 630 come from?
Area code 630 was created on August 3, 1996, in a three-way split of the overburdened area code 708. The western suburbs were assigned 630, the northern suburbs became 847, and the southern and eastern suburbs retained 708.
Do I need to dial ten digits for local calls in the 630 area?
Yes. Since the 331 overlay went into service on October 7, 2007, all local calls within the 630/331 region require ten-digit dialing (area code + seven-digit number).
