| Business | Phone |
| Chamberlain Chapter One Mobile 500 N Main St, Chamberlain 57325 | (605) 734-4480 |
| Chamberlain Elementary School 301 E Kellam Ave, Chamberlain 57325 | (605) 734-4460 |
| Chamberlain Elementary School E 8th, Chamberlain 57325 | (605) 734-4460 |
| Chamberlain High School 1000 Sorenson Dr, Chamberlain 57325 | (605) 734-4467 |
| Chamberlain Middle School 301 E Kellam Ave, Chamberlain 57325 | (605) 734-4463 |
| Chamberlain School Adm Office 301 E Kellam Ave, Chamberlain 57325 | (605) 734-4478 |
| Chamberlain School Supt 306 E Kellam Ave, Chamberlain 57325 | (605) 734-4477 |
| St James Parish Ctr 400 S Main St, Chamberlain 57325 | (605) 734-6352 |
| St Joseph Indian School 1301 N Main St, Chamberlain 57325 | (605) 234-3300 |