|
Region |
Cities |
Code |
|
Region |
Cities |
Code |
| MA | Boston, Cambridge and east central Massachusetts | 617 | | MA | Boston, Cambridge and east central Massachusetts | 857 |
| MA | Fitchburg, Peabody and northeastern Massachusetts | 351 | | MA | Fitchburg, Peabody and northeastern Massachusetts | 978 |
| MA | Pittsfield, Springfield, Holyoke, Greenfield and western Massachusetts | 413 | | MA | Saugus, Norwood and east central Massachusetts | 339 |
| MA | Saugus, Norwood and east central Massachusetts | 781 | | MA | Worcester and southeastern Massachusetts | 774 |
| MA | Worcester, New Bedford and southeastern Massachusetts | 508 | | MD | Annapolis, Baltimore, Salisbury and eastern Maryland | 410 |
| MD | Annapolis, Baltimore, Salisbury and eastern Maryland | 443 | | MD | Hagerstown, Rockville, Cumberland and western Maryland | 240 |
| MD | Hagerstown, Rockville, Cumberland and western Maryland | 301 | | ME | Maine | 207 |
| MI | Alpena, Mt Pleasant, Bay City, Saginaw, Midland, Owosso and central Michigan | 989 | | MI | Ann Arbor, Monroe, Wayne, Ypsilanti and southwestern Detroit suburbs | 734 |
| MI | Battle Creek, Grand Rapids, Kalamazoo and southwestern Michigan | 616 | | MI | Dearborn, Detroit and inner Detroit suburbs | 313 |
| MI | Ironwood, Marquette, Sault Ste Marie, Escanaba and upper Michigan | 906 | | MI | Jackson, Lansing, Howell, Deerfield, Addison and south central Michigan | 517 |
| MI | Port Huron, Flint, Flushing, Warren and eastern Michigan | 586 | | MI | Port Huron, Flint, Flushing, Warren and eastern Michigan | 810 |
| MI | Traverse City, Ludington, Muskegon, Petoskey and northwestern Michigan | 231 | | MI | Troy, Oakland County, Pontiac, Southfield, Rochester Hills and northwestern Detroit suburbs | 248 |
| MN | Bloomington, Minnetonka, Chaska and southwest Minneapolis area | 952 | | MN | Central Minneapolis, Fort Snelling, St Anthony and Richfield | 612 |
| MN | Duluth, Thief River Falls, Brainerd, International Falls and northern Minnesota | 218 | | MN | Maple Grove, Monticello, Elk River, Fridley, Blaine, and northwest Minneapolis area | 763 |
| MN | Rochester, Mankato, Worthington, Marshall and southern Minnesota | 507 | | MN | St Cloud, Morris, Hutchinson, Sandstone, Appleton and central Minnesota | 320 |
| MN | St Paul, Lindstrom, Red Wing, Hastings and east central Minnesota | 651 | | MO | Chesterfield, Union, De Soto, Troy and east central Missouri | 636 |
| MO | Jefferson City, Hannibal, Poplar Bluff and eastern Missouri excluding St Louis | 573 | | MO | Joplin, Springfield, West Plains, Lamar, Lebanon and southwestern Missouri | 417 |
| MO | Kansas City, St Joseph, Independence, Harrisonville and west central Missouri | 816 | | MO | Marshall, Sedalia, Macon, Trenton, Maryville and north central Missouri | 660 |
| MO | St Louis, Florissant, Crestwood, Affton, Granite City and surrounding suburbs | 314 | | MS | Greenville, Tupelo, Winona, Columbus, Holly Springs and northern Mississippi | 662 |
| MS | Gulfport, Pascagoula, Biloxi, Bay St Louis and southern Mississippi gulf coast | 228 | | MS | Jackson, Meridian, Natchez, McComb, Hattiesburg and central Mississippi | 601 |
| MT | Montana | 406 | |