| Business | Phone |
| Chatham Conservation Fndtn 104 Crowell Rd, Chatham 2633 | (508) 945-4084 |
| Chatham Food Pantry 625 Main St, Chatham 2633 | (508) 945-1813 |
| Chatham Historical Society Stage Harbor Rd, Chatham 2633 | (508) 945-2493 |
| Friends Of The Chatham Council 193 Stony Hill Rd, Chatham 2633 | (508) 945-9800 |