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Area Code 730 Location & Details

State / Region: Illinois • Country: United States

Major Cities Covered: Belleville, O'fallon, Granite City, Edwardsville, Alton, Collinsville, Carbondale, East St. Louis, Godfrey, Marion

Standard Dial Format
+1 (730) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 730?
IllinoisState Hub →
Country Territory
United States
730 Area Code Time Zone
Central
730 Overlay Codes
618

Area Code 730 Geographic Map

Interactive location bounds and coverage area for Illinois (Central Timezone)

Lat: 38.52° • Lng: -89.43°
📍 Geographic Center: IllinoisMap data © OpenStreetMap contributors

Where is Area Code 730 Located?

Telephone area code 730 is assigned to Illinois in United States. It serves cities and metropolitan communities including Belleville, O'fallon, Granite City, Edwardsville, Alton, Collinsville, Carbondale, East St. Louis, Godfrey, Marion.

Historical Context & Area Code Overlay Information:730 serves Illinois (United States).

For local and long-distance calls within area code 730, standard 10-digit dialing (730) XXX-XXXX applies.

Who Called Me from Area Code 730?

Received an unknown call, missed call, or text scam from area code 730? Here is how to trace who is calling from 730 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 730 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 730:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 730 & Dialing Format

When placing a phone call to a number in area code 730, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (730) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 730 + 7-digit number.
  • Do I need to dial area code 730 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 730

Urban centers, census places, and communities within the +1-730 calling area

50 Major Cities Listed
City NameCountyPopulation% of 730 Pop
BellevilleSt. Clair County40,2376.8%
O'fallonSt. Clair County32,6565.5%
Granite CityMadison County26,8074.5%
EdwardsvilleMadison County26,4634.5%
AltonMadison County25,0134.2%
CollinsvilleMadison County23,7174.0%
CarbondaleJackson County21,8113.7%
East St. LouisSt. Clair County17,6823.0%
GodfreyJersey County17,6203.0%
MarionWilliamson County17,1482.9%
Cahokia HeightsSt. Clair County16,8742.8%
Fairview HeightsSt. Clair County16,1752.7%
ShilohSt. Clair County14,6042.5%
SwanseaSt. Clair County14,3562.4%
Mount VernonJefferson County14,1872.4%
Glen CarbonMadison County13,8982.3%
HerrinWilliamson County12,2682.1%
TroyMadison County11,8932.0%
CentraliaMarion County11,8632.0%
WaterlooMonroe County11,1321.9%

Counties Covered by Area Code 730

Geographic county distribution and population coverage across Illinois

County NameTotal Population% of 730 Area% of County
Madison County263,31730.6%69%
St. Clair County251,37528.0%66%
Williamson County67,0745.9%53%
Jackson County52,6824.8%55%
Jersey County21,1554.4%100%
Monroe County35,1053.7%63%
Marion County36,5013.2%52%
Jefferson County36,1122.4%39%
Franklin County36,9542.3%37%
Perry County20,3761.8%51%
Richland County15,3681.4%54%
Saline County22,8301.3%35%
Bond County16,6001.3%45%
Crawford County18,6211.2%39%
Fayette County20,9541.2%34%
Randolph County29,8701.2%23%
Wabash County11,0261.1%61%
Massac County13,6161.0%42%
Wayne County15,8830.8%30%
Kankakee County105,8140.8%4%
Clay County12,8450.8%36%
White County13,4490.8%34%

☎️Area Code 730 Exchange Prefixes & Carriers

Showing 50 of 141 central office 3-digit prefixes and assigned telecom carriers

35% Landline35% Wireless29% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(730) 200-💻VoIPKASKASKIAONVOY, LLC08/23/2023
(730) 201-💻VoIPCHRISTOPHRONVOY, LLC08/23/2023
(730) 202-💻VoIPRALEGHGLTIONVOY, LLC09/06/2023
(730) 203-💻VoIPSHAWNEETNONVOY, LLC09/06/2023
(730) 204-💻VoIPVILLARIDGEONVOY, LLC09/06/2023
(730) 205-💻VoIPDONGOLAONVOY, LLC09/06/2023
(730) 206-💻VoIPRIDGWAYONVOY, LLC09/06/2023
(730) 207-📞LandlineIUKAAT&T ENTERPRISES, LLC09/06/2023
(730) 208-📱WirelessHERRINNEW CINGULAR WIRELESS PCS, LLC - IL09/11/2023
(730) 209-💻VoIPBRUSSELSONVOY, LLC09/12/2023
(730) 210-💻VoIPBELLMONTONVOY, LLC09/12/2023
(730) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(730) 212-💻VoIPINAONVOY, LLC09/12/2023
(730) 213-💻VoIPKELLONVOY, LLC09/12/2023
(730) 214-💻VoIPKINMUNDYONVOY, LLC09/12/2023
(730) 215-💻VoIPMULBRY GRVONVOY, LLC09/12/2023
(730) 216-💻VoIPPATOKAONVOY, LLC09/12/2023
(730) 217-💻VoIPSHATTUCONVOY, LLC09/12/2023
(730) 218-💻VoIPST PETERONVOY, LLC09/12/2023
(730) 219-💻VoIPWOODBURNONVOY, LLC09/12/2023
(730) 220-📱WirelessCENTRALIANEW CINGULAR WIRELESS PCS, LLC - IL09/14/2023
(730) 221-📞LandlineBROOKPORTCOMMIO, LLC09/28/2023
(730) 222-📞LandlineDE SOTOCOMMIO, LLC09/28/2023
(730) 223-📞LandlineGOREVILLECOMMIO, LLC09/28/2023
(730) 224-📞LandlineKARNAKCOMMIO, LLC09/28/2023
(730) 225-📞LandlineCAIROCALLWORKS CORPORATION10/06/2023
(730) 226-📱WirelessCOLLINSVLNEW CINGULAR WIRELESS PCS, LLC - IL10/12/2023
(730) 227-📱WirelessCENTRALIANEW CINGULAR WIRELESS PCS, LLC - IL10/13/2023
(730) 228-📞LandlineOLNEYIP HORIZON LLC11/13/2023
(730) 229-📱WirelessHERRINNEW CINGULAR WIRELESS PCS, LLC - IL07/10/2025
(730) 230-📱WirelessALTONT-MOBILE USA, INC.12/15/2023
(730) 231-📱WirelessE ST LOUIST-MOBILE USA, INC.01/05/2024
(730) 232-📱WirelessCENTRALIANEW CINGULAR WIRELESS PCS, LLC - IL01/10/2024
(730) 233-📱WirelessMCCLURET-MOBILE USA, INC.01/10/2024
(730) 234-📱WirelessCENTRALIANEW CINGULAR WIRELESS PCS, LLC - IL02/05/2024
(730) 235-📱WirelessMURPHYSBOT-MOBILE USA, INC.02/08/2024
(730) 236-📱WirelessTROYT-MOBILE USA, INC.02/08/2024
(730) 237-📞LandlinePINCKNEYVLCHARTER IP ENABLED SERVICES, LLC02/09/2024
(730) 238-💻VoIPOLNEYONVOY, LLC02/26/2024
(730) 239-📱WirelessMT VERNONNEW CINGULAR WIRELESS PCS, LLC - IL03/05/2024
(730) 240-💻VoIPO FALLONONVOY, LLC03/11/2024
(730) 241-📱WirelessHERRINNEW CINGULAR WIRELESS PCS, LLC - IL03/11/2024
(730) 242-📱WirelessCARBONDALENEW CINGULAR WIRELESS PCS, LLC - IL04/05/2024
(730) 243-💻VoIPPAULTONONVOY SPECTRUM, LLC04/24/2024
(730) 244-💻VoIPSESSERONVOY SPECTRUM, LLC04/24/2024
(730) 245-💻VoIPSTONEFORTONVOY SPECTRUM, LLC04/24/2024
(730) 246-💻VoIPCOBDENONVOY SPECTRUM, LLC04/24/2024
(730) 247-💻VoIPJOPPAONVOY SPECTRUM, LLC04/24/2024
(730) 248-💻VoIPZEIGLERONVOY SPECTRUM, LLC04/24/2024
(730) 249-📱WirelessOLNEYNEW CINGULAR WIRELESS PCS, LLC - IL04/30/2024

Frequently Asked Questions about Area Code 730

Where is area code 730 located?

Area code 730 is located in Illinois (United States), serving cities like Belleville, O'fallon, Granite City, Edwardsville, Alton, Collinsville, Carbondale, East St. Louis, Godfrey, Marion.

What timezone is area code 730?

Area code 730 operates in the Central timezone.

What state is area code 730?

Area code 730 is assigned to the state / telecom territory of Illinois.

Is area code 730 a scam or dangerous?

Area code 730 is an official geographic area code for Illinois. However, beware of robocaller spoofing.

Illinois State Area Codes

View complete directory of telephone area codes assigned to Illinois.

Explore Illinois Directory

Get a 730 Business Phone Number

How to acquire a virtual phone number or business line with area code 730 for local customer trust in Illinois.

Get 730 Business Number
🛡️ Scam & Safety Directory

Check high-risk international callback scam area codes and robocall warning databases.

Scam Area Codes 2026

Overlay & Nearby Area Codes for Illinois

Explore neighboring telecom prefixes sharing geographical boundaries with area code 730.

618
Central
Area Code 618
Belleville, O'fallon, Granite City, Edwardsville, Alton, Collinsville, Carbondale, East St. Louis, Godfrey, Marion
217
Central
Area Code 217
Springfield, Champaign, Decatur, Urbana, Quincy, Danville, Jacksonville, Charleston, Mattoon, Chatham
224
Central
Area Code 224
Elgin, Waukegan, Schaumburg, Evanston, Arlington Heights, Skokie, Palatine, Des Plaines, Mount Prospect, Hoffman Estates
309
Central
Area Code 309
Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island, Pekin, Galesburg, East Peoria, Crest Hill
312
Central
Area Code 312
Chicago, West Chicago
331
Central
Area Code 331
Aurora, Naperville, Schaumburg, Bolingbrook, Wheaton, Downers Grove, Elmhurst, Lombard, Bartlett, Oswego