| Business | Phone |
| Baring Baptist Church Front St, Calais 4619 | (207) 454-0531 |
| Calais Church Of God 3 Germain St, Calais 4619 | (207) 454-7637 |
| Calais United Methodist Church 849 Main St, Calais 4619 | (207) 454-3926 |
| First Congregational Church 13 Calais Ave, Calais 4619 | (207) 454-7321 |
| First Congregational Thrift 199 Main St, Calais 4619 | (207) 454-3378 |
| Immaculate Conception Church 31 Calais Ave, Calais 4619 | (207) 454-3413 |
| Jehovah's Witnesses 143 North St, Calais 4619 | (207) 454-3849 |
| Methodist Church Study 339 Main St, Calais 4619 | (207) 454-7226 |
| Saint Joseph Church 51 Washington St, Calais 4619 | (207) 853-2825 |
| Seventh-Day Adventist Church 8 Chapel St, Calais 4619 | (207) 454-7481 |
| St Anne's Episcopal Church 23 Church St, Calais 4619 | (207) 454-8016 |
| St Croix Valley Assembly-God 322 North St, Calais 4619 | (207) 454-8160 |
| Second Baptist Church 21 Church St., Calais 4619 | (207) 454-2579 |