730 Area CodeBelleville, IL
Area code 730 covers Belleville and nearby communities in Illinois, in the Central Time (CT) zone, home to about 822,000 people across 329 cities. It overlays 618, so the same region uses both and every local call needs all ten digits.
Overview
- Major City
- Belleville
- State
- Illinois (IL)
- Timezone
- Central Time (CT)
- Current Time
- Overlay
- Yes – shares area with 618
Where is area code 730?
Area code 730 serves part of Belleville, IL and the surrounding areas. It has a single overlay (618) that serves the same area.
Overview of the 730 Area Code
What is the 730 area code?
The 730 area code serves Belleville, Illinois, alongside other established area codes. When you see a 730 number, it indicates a local number within this geographic area.
Why was area code 730 created?
The 730 area code was introduced as an overlay to add numbers in Belleville once the existing area code 618 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 730 Area Code
The 730 area code serves Belleville and surrounding areas in Illinois. It operates within the Central Time (CT) time zone. It complements the coverage of area code 618. This area code covers several key cities, including:
- Belleville
- O'Fallon
- Granite City
- Edwardsville
- Alton
- Collinsville
Got a call from a 730 number? It came from Belleville, IL. Since 730 overlays with 618, every local call in the region needs all ten digits to land on the right line. Inside 730, Belleville holds about 5% of the population; the rest is split across 328 smaller cities.
Belleville Area Codes Overview
Belleville is served by multiple area codes, reflecting its telecommunications needs. The 730 area code operates alongside 618. Here are the area codes serving this region:
The introduction of the 730 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 730 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Belleville | IL | 40,560 | 0% | 100% |
| O'Fallon | IL | 32,169 | 0% | 100% |
| Granite City | IL | 26,854 | 0% | 100% |
| Edwardsville | IL | 26,715 | 0% | 100% |
| Alton | IL | 24,967 | 0% | 100% |
| Collinsville | IL | 23,766 | 0% | 100% |
| Carbondale | IL | 22,223 | 0% | 100% |
| East St. Louis | IL | 17,808 | 0% | 100% |
| Godfrey | IL | 17,610 | 0% | 100% |
| Marion | IL | 17,021 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 730 been reported for unwanted calls?
Yes – 29 unwanted-call complaints were reported to the FTC for numbers showing a 730 area code (May 29 – Jul 1, 2026).
- 66% robocalls
- ↓ 29% vs prior period
Most-reported subjects
- Other52%15
- Dropped call or no message17%5
- Warranties & protection plans7%2
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Frequently Asked Questions about the 730 Area Code
Who called me from a 730 number?
A 730 number is assigned to Belleville, Illinois, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 730 code to look nearby, so a 730 number doesn't prove the caller is local. Recently, 29 unwanted-call complaints were reported to the FTC for numbers showing the 730 code (66% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 730 a scam area code?
No area code is a scam on its own. 730 is a normal, officially assigned code for Belleville, Illinois. Spam callers spoof local codes to raise the odds you answer, so 730 on your caller ID says nothing about who is really calling. Recently, 29 unwanted-call complaints were reported to the FTC for numbers showing the 730 code (66% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 730 area code?
Repeated calls from different 730 numbers are usually spoofing: a robocaller rotates through 730 numbers so each call looks local and slips past simple blocks. Recently, 29 unwanted-call complaints were reported to the FTC for numbers showing the 730 code (66% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 730 number?
If you aren't expecting a 730 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 730 area code?
Block a single 730 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 730 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 730?
Area code 730 covers Belleville and the surrounding area in Illinois, spanning 329 cities with about 822,193 residents. It shares its area with overlay code 618.
Is 730 a real area code?
Yes. 730 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Belleville, Illinois. A real code can still show up on spoofed spam calls, so treat unknown 730 calls with normal caution.
What timezone is the 730 area code in?
The 730 area code is in the Central Time (CT). Because a number can be kept when someone moves or switches to VoIP, a specific 730 caller may not be in that zone.
How do I call a 730 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 730 and the seven-digit number. From a mobile phone you can usually just enter +1 730 followed by the number and let the phone add the exit code for you.