| Business | Phone |
| United Methodist 9 E 9th Ave, Groton 57445 | (605) 397-4538 |
| United Methodist Church 906 N 1st St, Groton 57445 | (605) 397-2670 |
| St Elizabeth Ann Seton Church 107 E 7th Ave, Groton 57445 | (605) 397-2775 |
| St John's Lutheran Church 307 N 1st St, Groton 57445 | (605) 397-2449 |
| St John's Lutheran Church 308 N 2nd St, Groton 57445 | (605) 397-2386 |
| St Paul Lutheran Church 301 W 2nd Ave, Groton 57445 | (605) 395-6420 |
| Emmanuel Lutheran 1005 N 1st St, Groton 57445 | (605) 397-2354 |
| Emmanuel Lutheran Church 1006 N 2nd St, Groton 57445 | (605) 397-2354 |
| First Presbyterian Church 300 N Main St, Groton 57445 | (605) 397-8323 |
| Houghton Alliance Church Po Box 564, Groton 57445 | (605) 397-8606 |