Below are any Massachusetts statewide conventional or trunking systems followed by Massachusetts fire department frequencies sorted by county. To find your local Massachusetts fire department frequencies, navigate to your county and enter the frequencies you find into your fire department scanner. Please feel free to submit corrections!
| Barnstable | Berkshire | Bristol | Dukes | |
| Essex | Franklin | Hampden | Hampshire | |
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| Middlesex | Nantucket | Norfolk | Plymouth | |
| Suffolk | Worcester | |||
Massachusetts, officially the Commonwealth of Massachusetts, is the most populous state in the New England region of the northeastern United States. Massachusetts's bordered by the Atlantic Ocean to the east, the states of Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York to the west. The state is named after the Massachusett tribe, which once inhabited the east side of the area. The capital of Massachusetts and the most populous city in New England is Boston. Over 80% of Massachusetts's population lives in the Greater Boston metropolitan area, a region influential upon American history, academia, and industry.