Michigan Area Codes, United States

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Find the real owner of someone with a 231, 248, 269, 313 and 586, 517, 616, 734, 810, 906, 947 and 989 Michigan Area Codes

Michigan was the twenty-sixth state to join the Union in 1837. Today, the Great Lakes State is home to 10 million residents. Generally, a Michigan phone number will contain any of the 12 Michigan area codes, depending on the city or town. But, you can always see a caller’s exact location by looking up the number on a Michigan phone numbers database. 

At first, Michigan phone numbers used to be an alphanumeric combination of two letters and five numbers, i.e., the 2L-5N format. The two letters represented the switchboard a phone owner uses, while the five-digit number was the subscriber’s unique identifier.

However, with the alphanumeric system, not everyone who wanted a phone number could get one. So, the North American Numbering Plan Administrator created a 7-digit numbers-only system to expand the pool of available phone numbers. Still, this 7-digit system soon faced the same limitation from the alphanumeric system – there were more subscribers than available numbers.

So, the industry expanded this pool using area codes, depending on geographic location.

To put it into perspective, take your typical Detroit phone number, 313-NYY-XXXX, and think of it as a physical address.

313 is the area code, representing a small geographical area within Michigan – in this case, Detroit. The next three digits, NYY, make up the prefix code. The prefix code narrows down the call recipient to a particular town or street in Detroit.

The last four digits, XXXX, is the line number, a unique identifier for the phone number owner. In a house address, the line number would be a house number, flat number, or room number.

Michigan started with three area codes in 1947, which was enough to cover phone owners at the time. Since then, the state has created 12 area codes using overlay and geographic split to let old residents keep old area codes while introducing new Michigan area codes. 

Besides connecting you with the person you wish to call, area codes also let you identify an unknown caller’s location. But you will need a phone number search on a Michigan phone numbers database to get specific information about the caller’s address and related public records. 

Several persons can have the same area code if they live in the same area. Likewise, close neighbors can have the same prefix code. However, no two persons can have the same line number. 

County FIPS code County seat Established Population Area
Alcona County001Harrisville184010,9421,791 sq mi
Alger County003Munising18859,6015,049 sq mi
Allegan County005Allegan1831111,4081,833 sq mi
Alpena County007Alpena184030,0001,695 sq mi
Antrim County009Bellaire184023,598602 sq mi
Arenac County011Standish183115,899681 sq mi
Baraga County013L’Anse18758,8601,069 sq mi
Barry County015Hastings182959,173577 sq mi
Bay County017Bay City1857107,771631 sq mi
Benzie County019Beulah186317,525860 sq mi
Berrien County021St. Joseph1829156,8131,581 sq mi
Branch County023Coldwater182945,248519 sq mi
Calhoun County025Marshall1829136,146718 sq mi
Cass County027Cassopolis182952,293508 sq mi
Charlevoix County029Charlevoix186925,9491,391 sq mi
Cheboygan County031Cheboygan184026,152885 sq mi
Chippewa County033Sault Ste. Marie182738,5202,698 sq mi
Clare County035Harrison184030,926575 sq mi
Clinton County037St. Johns183175,382575 sq mi
Crawford County039Grayling184014,074563 sq mi
Delta County041Escanaba184337,0691,992 sq mi
Dickinson County043Iron Mountain189126,168777 sq mi
Eaton County045Charlotte1829107,759579 sq mi
Emmet County047Petoskey184032,694882 sq mi
Genesee County049Flint1835425,790649 sq mi
Gladwin County051Gladwin183125,692516 sq mi
Gogebic County053Bessemer188716,4271,476 sq mi
Grand Traverse County055Traverse City185186,986601 sq mi
Gratiot County057Ithaca183142,476572 sq mi
Hillsdale County059Hillsdale182946,688607 sq mi
Houghton County061Houghton184536,6281,502 sq mi
Huron County063Bad Axe184033,1182,136 sq mi
Ingham County065Mason1829280,895561 sq mi
Ionia County067Ionia183163,905580 sq mi
Iosco County069Tawas City184025,8871,891 sq mi
Iron County071Crystal Falls188511,8171,211 sq mi
Isabella County073Mt. Pleasant183170,311578 sq mi
Jackson County075Jackson1829160,248724 sq mi
Kalamazoo County077Kalamazoo1829250,331580 sq mi
Kalkaska County079Kalkaska184017,153571 sq mi
Kent County081Grand Rapids1831602,622872 sq mi
Keweenaw County083Eagle River18612,1565,966 sq mi
Lake County085Baldwin184011,539575 sq mi
Lapeer County087Lapeer182288,319663 sq mi
Leelanau County089Suttons Bay Township184021,7082,532 sq mi
Lenawee County091Adrian182299,892761 sq mi
Livingston County093Howell1833180,967585 sq mi
Luce County095Newberry18876,6311,912 sq mi
Mackinac County097St. Ignace181811,1132,101 sq mi
Macomb County099Mt. Clemens1818840,978570 sq mi
Manistee County101Manistee184024,7331,281 sq mi
Marquette County103Marquette184367,0773,425 sq mi
Mason County105Ludington184028,7051,242 sq mi
Mecosta County107Big Rapids184042,798571 sq mi
Menominee County109Menominee186124,0291,338 sq mi
Midland County111Midland183183,629528 sq mi
Missaukee County113Lake City184014,849574 sq mi
Monroe County115Monroe1817152,021680 sq mi
Montcalm County117Stanton183163,342721 sq mi
Montmorency County119Atlanta18409,765562 sq mi
Muskegon County121Muskegon1859172,1881,459 sq mi
Newaygo County123White Cloud184048,460861 sq mi
Oakland County125Pontiac18191,202,362908 sq mi
Oceana County127Hart183126,5701,307 sq mi
Ogemaw County129West Branch184021,699575 sq mi
Ontonagon County131Ontonagon18436,7803,741 sq mi
Osceola County133Reed City184023,528573 sq mi
Oscoda County135Mio18408,640572 sq mi
Otsego County137Gaylord184024,164526 sq mi
Ottawa County139Grand Haven1831263,8011,632 sq mi
Presque Isle County141Rogers City184013,3762,573 sq mi
Roscommon County143Roscommon184024,449580 sq mi
Saginaw County145Saginaw1822200,169816 sq mi
St. Clair County147Port Huron1820163,040837 sq mi
St. Joseph County149Centreville182961,295521 sq mi
Sanilac County151Sandusky182243,1141,590 sq mi
Schoolcraft County153Manistique18438,4851,884 sq mi
Shiawassee County155Corunna182270,648541 sq mi
Tuscola County157Caro184055,729914 sq mi
Van Buren County159Paw Paw182976,2581,090 sq mi
Washtenaw County161Ann Arbor1822344,791723 sq mi
Wayne County163Detroit18151,820,584672 sq mi
Wexford County165Cadillac184032,735576 sq mi

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