area codes starting 9
| Barre, Massachusetts | 978 | More |
| South Barre, Massachusetts | 978 | More |
| Athol, Massachusetts | 978 | More |
| Erving, Massachusetts | 978 | More |
| New Salem, Massachusetts | 978 | More |
| Orange, Massachusetts | 978 | More |
| Petersham, Massachusetts | 978 | More |
| Royalston, Massachusetts | 978 | More |
| Wendell, Massachusetts | 978 | More |
| Wendell Depot, Massachusetts | 978 | More |
| Fitchburg, Massachusetts | 978 | More |
| Ashburnham, Massachusetts | 978 | More |
| Ashby, Massachusetts | 978 | More |
| Ayer, Massachusetts | 978 | More |
| Baldwinville, Massachusetts | 978 | More |
| East Templeton, Massachusetts | 978 | More |
| Gardner, Massachusetts | 978 | More |
| Westminster, Massachusetts | 978 | More |
| Groton, Massachusetts | 978 | More |
| Harvard, Massachusetts | 978 | More |
| Hubbardston, Massachusetts | 978 | More |
| Leominster, Massachusetts | 978 | More |
| Littleton, Massachusetts | 978 | More |
| Lunenburg, Massachusetts | 978 | More |
| Pepperell, Massachusetts | 978 | More |
| Shirley, Massachusetts | 978 | More |
| Still River, Massachusetts | 978 | More |
| Templeton, Massachusetts | 978 | More |
| Townsend, Massachusetts | 978 | More |
| Groton, Massachusetts | 978 | More |
| Groton, Massachusetts | 978 | More |
| West Groton, Massachusetts | 978 | More |
| Westminster, Massachusetts | 978 | More |
| West Townsend, Massachusetts | 978 | More |
| Winchendon, Massachusetts | 978 | More |
| Winchendon Springs, Massachusetts | 978 | More |
| Berlin, Massachusetts | 978 | More |
| Clinton, Massachusetts | 978 | More |
| Lancaster, Massachusetts | 978 | More |
| Princeton, Massachusetts | 978 | More |
| South Lancaster, Massachusetts | 978 | More |
| Sterling, Massachusetts | 978 | More |
| Village Of Nagog Woods, Massachusetts | 978 | More |
| Boxborough, Massachusetts | 978 | More |
| Acton, Massachusetts | 978 | More |
| Bolton, Massachusetts | 978 | More |
| Carlisle, Massachusetts | 978 | More |
| Concord, Massachusetts | 978 | More |
| Hudson, Massachusetts | 978 | More |
| Maynard, Massachusetts | 978 | More |
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