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Area Code 309 Location & Details

State / Region: Illinois • Country: United States

Major Cities Covered: Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island, Pekin, Galesburg, East Peoria, Crest Hill

Standard Dial Format
+1 (309) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 309?
IllinoisState Hub →
Country Territory
United States
309 Area Code Time Zone
Central
309 Overlay Codes
861

Area Code 309 Geographic Map

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

Lat: 40.88° • Lng: -89.74°
📍 Geographic Center: IllinoisMap data © OpenStreetMap contributors

Where is Area Code 309 Located?

Telephone area code 309 is assigned to Illinois in United States. It serves cities and metropolitan communities including Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island, Pekin, Galesburg, East Peoria, Crest Hill.

Historical Context & Area Code Overlay Information:309 serves Illinois (United States).

For local and long-distance calls within area code 309, standard 10-digit dialing (309) XXX-XXXX applies.

Who Called Me from Area Code 309?

Received an unknown call, missed call, or text scam from area code 309? Here is how to trace who is calling from 309 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 309 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 309:

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

Learn How Reverse Phone Lookups Work→

How to Call Area Code 309 & Dialing Format

When placing a phone call to a number in area code 309, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (309) + 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 + 309 + 7-digit number.
  • Do I need to dial area code 309 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 309

Urban centers, census places, and communities within the +1-309 calling area

50 Major Cities Listed
City NameCountyPopulation% of 309 Pop
PeoriaPeoria County110,92016.2%
BloomingtonMcLean County78,80411.5%
NormalMcLean County53,2757.8%
MolineRock Island County42,3626.2%
RomeovilleWill County41,2816.0%
Rock IslandRock Island County36,2255.3%
PekinTazewell County31,2774.6%
GalesburgKnox County28,5814.2%
East PeoriaTazewell County22,0883.2%
Crest HillWill County20,6953.0%
East MolineRock Island County20,4533.0%
MortonTazewell County17,5652.6%
WashingtonTazewell County15,9022.3%
MacombMcDonough County14,5302.1%
CantonFulton County13,2971.9%
KewaneeStark County12,1151.8%
MonmouthWarren County8,5991.3%
SilvisRock Island County7,9791.2%
GeneseoHenry County6,5051.0%
ChillicotheMarshall County6,0330.9%

Counties Covered by Area Code 309

Geographic county distribution and population coverage across Illinois

County NameTotal Population% of 309 Area% of County
McLean County171,51220.1%80%
Peoria County178,54119.4%74%
Rock Island County141,59116.9%82%
Tazewell County129,98214.1%74%
Will County708,9809.1%9%
Knox County47,9644.6%65%
Woodford County38,1982.8%50%
McDonough County26,1152.5%66%
Henry County48,1932.3%33%
Fulton County32,8072.2%47%
Stark County5,2691.8%100%
Warren County16,1161.7%71%
Marshall County11,5711.2%72%
Mercer County15,2920.5%23%
De Witt County15,2440.4%19%
Mason County12,4890.4%22%

☎️Area Code 309 Exchange Prefixes & Carriers

Showing 50 of 798 central office 3-digit prefixes and assigned telecom carriers

70% Landline18% Wireless12% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(309) 200-📞LandlineBLOOMINGTNYMAX COMMUNICATIONS CORP. - IL02/17/2011
(309) 201-📱WirelessPEKINUNITED STATES CELLULAR - IL09/28/2012
(309) 202-📱WirelessPEKINCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL02/07/2004
(309) 203-📱WirelessEASTMOLINENEW CINGULAR WIRELESS PCS, LLC - IL11/03/2011
(309) 204-💻VoIPSPRING BAYBANDWIDTH.COM CLEC, LLC - IL09/01/2017
(309) 205-📞LandlineBLOOMINGTNCENTURYLINK COMMUNICATIONS, LLC02/26/2014
(309) 206-📞LandlineROCKISLANDILLINOIS BELL TEL CO07/19/2011
(309) 207-📱WirelessILLINOISCYCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL10/18/2002
(309) 208-📱WirelessPEORIAT-MOBILE USA, INC.N/A
(309) 209-📞LandlineMACOMBNUSO, LLC03/13/2013
(309) 210-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(309) 212-📱WirelessBLOOMINGTNCELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILN/A
(309) 213-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 214-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 215-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 216-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 217-📱WirelessPEKINCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL04/12/2021
(309) 218-📞LandlinePEORIALEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 219-📱WirelessPEORIAUNITED STATES CELLULAR - ILN/A
(309) 220-💻VoIPWASHBURNONVOY, LLC10/16/2002
(309) 221-📱WirelessGALESBURGUNITED STATES CELLULAR - ILN/A
(309) 222-📞LandlinePEORIAAT&T - LOCALN/A
(309) 223-💻VoIPNORTHPEKINONVOY, LLC06/24/2021
(309) 224-📱WirelessPEORIAUNITED STATES CELLULAR - ILN/A
(309) 225-💻VoIPKEITHSBURGONVOY, LLC06/24/2021
(309) 226-📞LandlineCANTONLEVEL 3 COMMUNICATIONS, LLC - ILN/A
(309) 227-📞LandlineCORDOVACITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -ILN/A
(309) 228-📞LandlineFARMINGTONLEVEL 3 COMMUNICATIONS, LLC - IL10/16/2002
(309) 229-📞LandlinePEORIAAT&T - LOCALN/A
(309) 230-📱WirelessROCKISLANDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL12/14/2001
(309) 231-📱WirelessPEORIAUNITED STATES CELLULAR - ILN/A
(309) 232-📱WirelessPEORIAUNITED STATES CELLULAR - ILN/A
(309) 233-📞LandlineMANITOTELEPORT COMMUNICATIONS AMERICA, LLC - IL01/10/2017
(309) 234-📞LandlineORIONFRONTIER COMMUNICATIONS OF ORION, INC.N/A
(309) 235-📱WirelessROCKISLANDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILN/A
(309) 236-📱WirelessROCKISLANDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILN/A
(309) 237-📱WirelessBUSHNELLNEW CINGULAR WIRELESS PCS, LLC - ILN/A
(309) 238-📱WirelessWYOMINGCELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILN/A
(309) 239-📞LandlineBLOOMINGTNTELNYX LLC12/10/2019
(309) 240-💻VoIPDUNLAPONVOY, LLC10/16/2002
(309) 241-📱WirelessSOUTHPEKINCELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILN/A
(309) 242-📱WirelessBLOOMINGTNT-MOBILE USA, INC.N/A
(309) 243-📞LandlineDUNLAPFRONTIER NORTH, INC. - ILN/A
(309) 244-📞LandlineDELAVANILLINOIS BELL TEL CON/A
(309) 245-📞LandlineFARMINGTONILLINOIS BELL TEL CON/A
(309) 246-📞LandlineLACONBRIGHTSPEED OF ILLINOIS, LLCN/A
(309) 247-📞LandlineSAN JOSEILLINOIS BELL TEL CON/A
(309) 248-📞LandlineWASHBURNFRONTIER NORTH, INC. - ILN/A
(309) 249-📞LandlineEDELSTEINFRONTIER NORTH, INC. - ILN/A

Frequently Asked Questions about Area Code 309

Where is area code 309 located?

Area code 309 is located in Illinois (United States), serving cities like Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island, Pekin, Galesburg, East Peoria, Crest Hill.

What timezone is area code 309?

Area code 309 operates in the Central timezone.

What state is area code 309?

Area code 309 is assigned to the state / telecom territory of Illinois.

Is area code 309 a scam or dangerous?

Area code 309 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 309 Business Phone Number

How to acquire a virtual phone number or business line with area code 309 for local customer trust in Illinois.

Get 309 Business Number
🛡️ Scam & Safety Directory

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Overlay & Nearby Area Codes for Illinois

Explore neighboring telecom prefixes sharing geographical boundaries with area code 309.

861
Central
Area Code 861
Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island, Pekin, Galesburg, East Peoria, Crest Hill
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
312
Central
Area Code 312
Chicago, West Chicago
331
Central
Area Code 331
Aurora, Naperville, Schaumburg, Bolingbrook, Wheaton, Downers Grove, Elmhurst, Lombard, Bartlett, Oswego
447
Central
Area Code 447
Springfield, Champaign, Decatur, Urbana, Quincy, Danville, Jacksonville, Charleston, Mattoon, Chatham