| Business | Phone |
| First United Methodist Church 401 Taylor Ave, Flat River 63601 | (573) 431-3124 |
| Flat River Church Of God 400 Houser St, Flat River 63601 | (573) 431-4349 |
| Frank Clay Nazarene Church 535 Highway M, Flat River 63601 | (573) 562-2728 |
| Elvins First Baptist Church 202 W Main St, Flat River 63601 | (573) 431-1323 |
| Faith Fellowship Outreach Ctr 408 W Main St, Flat River 63601 | (573) 431-0421 |
| Christian Church Parkhills 15 N Coffman St, Flat River 63601 | (573) 431-1586 |