| Police Department | Phone Number | Department Website |
| Cambridge | 617-349-3376 | |
| Canton | 781-821-5090 | |
| Carlisle | 978-369-1155 | |
| Carver | 508-866-2000 | |
| Charlemont | 413-625-8200 | |
| Charlton | 508-248-2250 | website for Charlton |
| Chatham | 508-945-1213 | |
| Chelmsford | 978-256-2521 | website for Chelmsford |
| Chelsea | 617-660-1500 | website for Chelsea |
| Cheshire | 413-743-1501 | |
| Chester | 413-354-7822 | |
| Chesterfield | 413-296-4353 | |
| Chicopee | 413-592-6341 | website for Chicopee |
| Chilmark | 508-645-3310 | |
| Clarksburg | 413-663-7795 | website for Clarksburg |
| Clinton | 978-365-4111 | website for Clinton |
| Cohasset | 781-383-1212 | website for Cohasset |
| Colrain | 413-624-3454 | |
| Concord | 978-369-7400 | website for Concord |
| Conway | 413-625-8200 | |
| Cummington | 413-634-0056 |
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