Area code 730 covers Belleville and surrounding areas in Illinois. It was activated in 2023 as an overlay of area code 618. Today it shares its territory with overlay code 618. For the full picture, see all Illinois area codes.
| State | Illinois |
|---|---|
| Primary city | Belleville |
| Cities also served | Belleville, East St. Louis, Alton, Carbondale, O'Fallon, Edwardsville, Collinsville, Granite City |
| Time zone | Central (UTC-6 / UTC-5 DST) |
| Year established | July 7, 2023 |
| Original 1947 NPA? | No |
| Parent code | 618 |
| Overlay codes | 618 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 730
Area code 730 serves Southern Illinois, including the Metro East region adjacent to St. Louis, Missouri, including the following cities and communities:
- Belleville
- East St. Louis
- Alton
- Carbondale
- O'Fallon
- Edwardsville
- Collinsville
- Granite City
Nearby area codes covering the same broader region include: 618.
How to Get a 730 Phone Number
There are three ways to get a phone number with the 730 area code, each suited to a different need:
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Browse 730 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 730 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 730 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 730 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 730 number. If you already have a 730 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 730 numbers due to 911 routing rules.
Looking for a 730 number? 212areacode.com offers premium 730 numbers for Belleville, 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 730 numbers →
Frequently Asked Questions
Is the 730 area code still in use?
Yes. 730 is actively assigned to new phone lines in Southern Illinois, including the Metro East region adjacent to St. Louis, Missouri.
What is the difference between 730 and 618?
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 730?
Area code 730 is an overlay of 618. Both codes serve the same region of Illinois.
Can I get a 730 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 730 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 730 a scam area code?
No. 730 is a legitimate, active area code for Southern Illinois, including the Metro East region adjacent to St. Louis, Missouri. Like any area code, scammers occasionally spoof 730 caller IDs, but the code itself is heavily used by real Illinois businesses, government offices, and residents.
What is area code 730?
Area code 730 is a telephone area code for southern Illinois, activated on July 7, 2023 as an all-services overlay to the existing 618 area code. Both codes serve the same geographic territory.
Do I need to dial 10 digits when calling a 730 number?
Yes. Because 730 overlays 618, ten-digit dialing (area code + seven-digit number) is required for all local calls within the southern Illinois region.
Why was area code 730 created?
A 2021 NANPA analysis projected that area code 618 would exhaust its available central office codes by 2025. The 730 overlay was introduced to ensure continued availability of new telephone numbers without requiring existing customers to change their numbers.
What is the largest city in the 730 area code?
Belleville, in St. Clair County, is the most populous city in the 730/618 numbering plan area, with a population of approximately 40,000 residents.
