| Business | Phone |
| All Angels Episcopal Church 907 N 5th St, Red Oak 51566 | (712) 623-3514 |
| Bethel A M E Church 1301 E Cherry St, Red Oak 51566 | (712) 623-2620 |
| Bethlehem Lutheran Church 1101 E Summit St, Red Oak 51566 | (712) 623-3394 |
| Church Of The Nazarene 1104 N 4th St, Red Oak 51566 | (712) 623-3484 |
| Church Of The Nazarene 401 E Prospect St, Red Oak 51566 | (712) 623-3484 |
| Faith Community Church 2701 N 8th St, Red Oak 51566 | (712) 623-3472 |
| First Baptist Church 504 E Reed St, Red Oak 51566 | (712) 623-9322 |
| First Congregational Church 608 E Reed St, Red Oak 51566 | (712) 623-2794 |
| First Covenant Church 211 E Hammond St, Red Oak 51566 | (712) 623-2195 |
| First Pentecostal Chr-Red Ok 611 E Coolbaugh St, Red Oak 51566 | (712) 623-8920 |
| First United Methodist Church 600 E Hammond St, Red Oak 51566 | (712) 623-2101 |
| Fremont Lutheran Church 1147 Ironwood Ave, Red Oak 51566 | (712) 623-3062 |
| Grace Baptist Church 1510 N 6th St, Red Oak 51566 | (712) 623-9615 |
| Hawthorne Church 206 E Maple St, Red Oak 51566 | (712) 623-2080 |
| Jehovah's Witnesses 100 N 2nd St, Red Oak 51566 | (712) 623-9637 |
| Nishna Church Of Christ 1880 State Highway 48, Red Oak 51566 | (712) 623-5363 |
| Nishna Church Of Christ Rr 2, Red Oak 51566 | (712) 623-5363 |
| Our Savior Lutheran Church 2300 N 8th St, Red Oak 51566 | (712) 623-4600 |
| Presbyterian Church 511 E Coolbaugh St, Red Oak 51566 | (712) 623-4751 |
| Red Oak Assembly Of God 1005 Senate Ave, Red Oak 51566 | (712) 623-2174 |
| St Marys Catholic Church 1510 Highland Ave, Red Oak 51566 | (712) 623-2744 |
| Stratton Church 1695 150th St, Red Oak 51566 | (712) 623-2991 |