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Area Code 231 Location & Details

State / Region: Michigan • Country: United States

Major Cities Covered: Muskegon, Norton Shores, Traverse City, Cadillac, Muskegon Heights, Big Rapids, Ludington, Manistee, Petoskey, Cheboygan

Standard Dial Format
+1 (231) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 231?
MichiganState Hub →
Country Territory
United States
231 Area Code Time Zone
Eastern / Central
231 Overlay Codes
No Overlays

Area Code 231 Geographic Map

Interactive location bounds and coverage area for Michigan (Eastern / Central Timezone)

Lat: 44.20° • Lng: -85.66°
📍 Geographic Center: MichiganMap data © OpenStreetMap contributors

Where is Area Code 231 Located?

Telephone area code 231 is assigned to Michigan in United States. It serves cities and metropolitan communities including Muskegon, Norton Shores, Traverse City, Cadillac, Muskegon Heights, Big Rapids, Ludington, Manistee, Petoskey, Cheboygan.

Historical Context & Area Code Overlay Information:231 serves Michigan (United States).

For local and long-distance calls within area code 231, standard 10-digit dialing (231) XXX-XXXX applies.

Who Called Me from Area Code 231?

Received an unknown call, missed call, or text scam from area code 231? Here is how to trace who is calling from 231 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 231 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 231:

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

Learn How Reverse Phone Lookups Work→

How to Call Area Code 231 & Dialing Format

When placing a phone call to a number in area code 231, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (231) + 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 + 231 + 7-digit number.
  • Do I need to dial area code 231 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 231

Urban centers, census places, and communities within the +1-231 calling area

50 Major Cities Listed
City NameCountyPopulation% of 231 Pop
MuskegonOttawa County37,22418.5%
Norton ShoresOttawa County25,08812.5%
Traverse CityGrand Traverse County15,8327.9%
CadillacWexford County10,4385.2%
Muskegon HeightsOttawa County9,7704.9%
Big RapidsMecosta County8,6234.3%
LudingtonMason County7,6343.8%
ManisteeManistee County6,1573.1%
PetoskeyEmmet County5,7722.9%
CheboyganCheboygan County4,8042.4%
FremontNewaygo County4,5992.3%
Roosevelt ParkOttawa County4,1212.1%
North MuskegonOttawa County4,0792.0%
Boyne CityAntrim County3,7931.9%
WhitehallMuskegon County3,2051.6%
NewaygoNewaygo County2,5471.3%
Reed CityOsceola County2,5281.3%
MontagueMuskegon County2,4241.2%
CharlevoixAntrim County2,3251.2%
KalkaskaKalkaska County2,2581.1%

Counties Covered by Area Code 231

Geographic county distribution and population coverage across Michigan

County NameTotal Population% of 231 Area% of County
Ottawa County306,19041.3%27%
Grand Traverse County96,4649.7%20%
Wexford County34,3476.4%37%
Antrim County24,4415.9%48%
Mecosta County41,9325.3%25%
Newaygo County51,3875.3%21%
Mason County29,0634.9%34%
Emmet County33,9474.7%28%
Muskegon County177,2253.5%4%
Manistee County25,5753.1%24%
Osceola County23,5712.5%22%
Cheboygan County25,8922.4%19%
Oceana County26,9572.1%16%
Kalkaska County18,6401.1%12%
Missaukee County15,1960.7%10%
Benzie County18,4920.6%7%
Lake County13,0160.5%8%

☎️Area Code 231 Exchange Prefixes & Carriers

Showing 50 of 596 central office 3-digit prefixes and assigned telecom carriers

67% Landline20% Wireless13% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(231) 200-📞LandlineMILocal Exchange CarrierN/A
(231) 201-📱WirelessCHIPPEWALKNEW CINGULAR WIRELESS PCS, LLC - IL03/05/2004
(231) 202-📱WirelessMECOSTANEW CINGULAR WIRELESS PCS, LLC - IL03/05/2004
(231) 203-📱WirelessALANSONNEW CINGULAR WIRELESS PCS, LLC - IL03/19/2004
(231) 204-📞LandlineFIFE LAKESPOK, INC.N/A
(231) 205-📞LandlineBRUTUSTELNET WORLDWIDE, INC.03/24/2004
(231) 206-📞LandlineMUSKEGONOMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLCN/A
(231) 207-📞LandlineHONORTELNET WORLDWIDE, INC.03/24/2004
(231) 208-📞LandlineBOYNEFALLSTELNET WORLDWIDE, INC.03/24/2004
(231) 209-📞LandlineSUTTONSBAYTELNET WORLDWIDE, INC.03/25/2004
(231) 210-💻VoIPST JAMESONVOY, LLCV - MI07/11/2023
(231) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(231) 212-📞LandlineINTERLOCHNCENTURYLINK COMMUNICATIONS, LLC07/25/2016
(231) 213-📞LandlineTRAVERSECYMICHIGAN BELL TEL CO03/26/2015
(231) 214-📞LandlineLAKE NORTHCHARTER IP ENABLED SERVICES, LLC03/12/2025
(231) 215-📱WirelessMUSKEGONCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MIN/A
(231) 216-💻VoIPFRANKFORTPEERLESS NETWORK OF MICHIGAN, LLC - MI12/01/2015
(231) 217-📞LandlineBEAR LAKETELNET WORLDWIDE, INC.03/24/2004
(231) 218-📞LandlineTRAVERSECYOMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLCN/A
(231) 219-📞LandlineMERRITTTELNET WORLDWIDE, INC.03/24/2004
(231) 220-📞LandlineMUSKEGON123.NET, LLC03/25/2003
(231) 221-📞LandlineHARBOR SPGCENTURYLINK COMMUNICATIONS, LLC06/01/2015
(231) 222-📞LandlineEASTJORDANLEVEL 3 COMMUNICATIONS, LLC - MI04/04/2002
(231) 223-📞LandlineOLDMISSIONACE TEL. CO. OF MICHIGAN, INC.N/A
(231) 224-💻VoIPFREMONTBANDWIDTH.COM CLEC, LLC - MIN/A
(231) 225-📞LandlineFREMONTLEVEL 3 COMMUNICATIONS, LLC - MI04/04/2002
(231) 226-📞LandlineGLEN LAKETELNET WORLDWIDE, INC.03/24/2004
(231) 227-📞LandlineHONORCHARTER IP ENABLED SERVICES, LLC09/26/2012
(231) 228-📞LandlineGLEN LAKEBRIGHTSPEED OF MICHIGAN, LLCN/A
(231) 229-📞LandlineMOORESTOWNBRIGHTSPEED OF MICHIGAN, LLCN/A
(231) 230-📞LandlineELMIRATELNET WORLDWIDE, INC.03/24/2004
(231) 231-📞LandlineMILocal Exchange CarrierN/A
(231) 232-📞LandlineMOORESTOWNTELNET WORLDWIDE, INC.03/24/2004
(231) 233-📱WirelessLUDINGTONCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI08/30/2004
(231) 234-📞LandlineBUCKLEYCHARTER IP ENABLED SERVICES, LLC12/07/2015
(231) 235-📞LandlineLEVERINGTELNET WORLDWIDE, INC.03/24/2004
(231) 236-📞LandlineLAKE CITYTELNET WORLDWIDE, INC.03/24/2004
(231) 237-📞LandlineCHARLEVOIXMICHIGAN BELL TEL CON/A
(231) 238-📞LandlineINDIAN RIVMICHIGAN BELL TEL CON/A
(231) 239-📱WirelessLUDINGTONCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI04/28/2004
(231) 240-📞LandlineLAKE ANNTELNET WORLDWIDE, INC.03/24/2004
(231) 241-📞LandlinePENTWATERDAYSTARR LLC DBA DAYSTARR COMMUNICATIONS10/10/2006
(231) 242-📞LandlineHARBOR SPGMICHIGAN BELL TEL CON/A
(231) 243-📞LandlineALANSONTELNET WORLDWIDE, INC.03/24/2004
(231) 244-📞LandlineBOYNE CITYCENTURYLINK COMMUNICATIONS, LLC08/26/2015
(231) 245-📱WirelessNEWAYGONEW CINGULAR WIRELESS PCS, LLC - IL07/17/2009
(231) 246-📞LandlineMUSKEGONCOMCAST IP PHONE, LLC12/22/2015
(231) 247-💻VoIPWILLIAMSBGBANDWIDTH.COM CLEC, LLC - MI09/28/2018
(231) 248-📞LandlineMILocal Exchange CarrierN/A
(231) 249-💻VoIPCHEBOYGANBANDWIDTH.COM CLEC, LLC - MIN/A

Frequently Asked Questions about Area Code 231

Where is area code 231 located?

Area code 231 is located in Michigan (United States), serving cities like Muskegon, Norton Shores, Traverse City, Cadillac, Muskegon Heights, Big Rapids, Ludington, Manistee, Petoskey, Cheboygan.

What timezone is area code 231?

Area code 231 operates in the Eastern / Central timezone.

What state is area code 231?

Area code 231 is assigned to the state / telecom territory of Michigan.

Is area code 231 a scam or dangerous?

Area code 231 is an official geographic area code for Michigan. However, beware of robocaller spoofing.

Michigan State Area Codes

View complete directory of telephone area codes assigned to Michigan.

Explore Michigan Directory

Get a 231 Business Phone Number

How to acquire a virtual phone number or business line with area code 231 for local customer trust in Michigan.

Get 231 Business Number
🛡️ Scam & Safety Directory

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Overlay & Nearby Area Codes for Michigan

Explore neighboring telecom prefixes sharing geographical boundaries with area code 231.

248
Eastern / Central
Area Code 248
Troy, Farmington Hills, Rochester Hills, Southfield, Novi, Pontiac, Royal Oak, Oak Park, Madison Heights, Auburn Hills
269
Eastern / Central
Area Code 269
Kalamazoo, Battle Creek, Portage, Niles, Sturgis, Benton Harbor, Three Rivers, St. Joseph, Hastings, Marshall
278
Eastern / Central
Area Code 278
Ann Arbor, Ypsilanti
313
Eastern / Central
Area Code 313
Detroit, Dearborn, Taylor, Dearborn Heights, Lincoln Park, Hamtramck, Highland Park
517
Eastern / Central
Area Code 517
Lansing, East Lansing, Jackson, Adrian, Coldwater, Howell, Charlotte, Tecumseh, Mason, Hillsdale
586
Eastern / Central
Area Code 586
Warren, Sterling Heights, St. Clair Shores, Roseville, Eastpointe, Grosse Pointe Woods, Mount Clemens, Harper Woods, Fraser, New Baltimore