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AREA CODE · ILLINOIS

Area code 730

Area code 730 covers Centralia, Illinois. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Illinois Major City: Centralia Central Time (CT) Overlay: 618/730
01 / WHERE IT IS

Where is area code 730?

Area code 730 is assigned to Centralia and the surrounding region in Illinois. Calls to numbers that start with 730 are routed to this area.

Area code 730 shares its territory with 618. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Marion CountySt. Clair CountyWilliamson CountyJackson CountyRichland CountyMadison CountyJefferson CountyFranklin CountyAlexander CountyUnion County

Line types

  • Mobile 45.38%
  • Landline 54.62%
02 / MAP

Area code 730 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Centralia

This area code is in the Central Time (CT) time zone.

Local timeCentralia, IL--:--:--

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America/ChicagoLive
04 / HOW TO DIAL

How to call Centralia

WITHIN THE US730 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 730 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 730 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 730 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 730 555 0123
🇦🇺Australia0011 1 730 555 0123
🇯🇵Japan010 1 730 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 730

Share of the number blocks by carrier and line type.

Landline

Sinch
46%
AT&T
25%
Commio
6%
Spectrum
5%
Lumen Technologies
3%
Others
15%

Mobile

AT&T Mobility
69%
Sinch
17%
T-MOBILE USA
11%
Verizon Wireless
4%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 730

119 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(730) 200 Landline Kaskaskia SinchONVOY, LLC
(730) 201 Landline Christopher SinchONVOY, LLC
(730) 202 Landline Raleigh Galatia SinchONVOY, LLC
(730) 203 Landline Shawneetown SinchONVOY, LLC
(730) 204 Landline Villa Ridge SinchONVOY, LLC
(730) 205 Landline Dongola SinchONVOY, LLC
(730) 206 Landline Ridgway SinchONVOY, LLC
(730) 207 Landline Iuka AT&TAT&T CORP.
(730) 208 Mobile Herrin AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - IL
(730) 209 Landline Brussels SinchONVOY, LLC

Showing 10 of 119 prefixes

07 / FAQ

Frequently asked questions about area code 730

Where is area code 730 used?
Area code 730 serves Centralia and the surrounding area in Illinois, including Marion County, St. Clair County, Williamson County, Jackson County, Richland County.
What city is area code 730 from?
The main city of area code 730 is Centralia, IL.
What time zone is area code 730 in?
Area code 730 is in the Central Time (CT) time zone (America/Chicago).
Is 730 an overlay area code?
Yes. It shares its territory with 618. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 730 from the United States?
Dial the 10 digits: 730 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 730 number from another country?
Dial your country's exit code (or +), then 1, then 730 and the seven-digit number. From a mobile you can use +1 730 XXX XXXX.
Which carriers use area code 730?
Most landline blocks belong to Sinch and most mobile blocks to AT&T Mobility. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 730 for landlines, mobiles or both?
Both. About 54.62% of the number blocks are landline, 45.38% mobile.
How do I save a 730 number in WhatsApp or my phone?
Save it in international format: +1 730 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 730?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

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Other area codes in Illinois

217 · Springfield224 · Arlington Heights309 · Peoria312 · Chicago331 · Aurora447 · Danville464 · Tinley Park618 · Collinsville630 · La Grange708 · La Grange773 · Chicago779 · Rockford815 · Rockford847 · Northbrook872 · Chicago

View all Illinois area codes →