| Cities (Cagayan Valley) | Churches (55)  |
| Tuguegarao City | Divine Mercy of Our Lord Jesus Christ (Parish, Shrine)  |
| Iguig | Eucharistic Lord (Monastery)  |
| Tuguegarao City | Good Shepherd  University of St. Louis Tuguegarao |
| Ballesteros | Holy Cross (Parish)  |
| Gadu | Holy Family (Parish)  |
| Tuao | Holy Guardian Angels (Parish)  |
| Dana-Ili | Immaculate Conception (Parish)  |
| Bukig | Mary, Mother of the Church (Parish)  |
| Tuguegarao City | Our Lady of Chartres (University)  St. Paul University |
| Allacapan | Our Lady of Fatima (Parish)  |
| Tallang | Our Lady of Peace and Good Voyage (Parish)  |
| Namuac | Our Lady of Perpetual Help (Parish)  |
| Piat | Our Lady of Piat (Minor Basilica, Shrine, Parish)  Basílica Nuestra Señora de Visitacion Parish St. Dominic de Guzman |
| Enrile | Our Lady of Snows (Parish)  |
| Santa Teresita | Our Lady of the Angels (Parish)  |
| Amulung | Our Lady of the Most Holy Rosary (Parish)  |
| Aparri | Our Lady of the Rosary (Parish, Shrine)  Parish of St. Peter Thelmo |
| Buguey | St. Anne (Parish)  |
| Santa Ana | St. Anthony of Padua (Parish)  |
| Calayan | St. Bartholomew (Parish)  |
| Gattaran | St. Catherine of Alexandria (Parish)  |
| Lal-lo | St. Dominic de Guzman (Former Cathedral, Parish)  |
| Baggao | St. Dominic de Guzman (Parish)  |
| Cataggaman | St. Dominic de Guzman (Parish)  |
| Mauanan | St. Francis of Assisi (Parish)  |
| Camalaniugan | St. Hyacinth of Poland (Parish)  |
| Dugo | St. Isidore the Farmer (Parish)  |
| Lasam | San Isidro Labrador (Parish)  |
| Nabaccayan | San Isidro Labrador (Parish, Shrine)  |
| Santa Praxedes | San Isidro Labrador (Parish)  |
| Peñablanca | San Jacinto (Seminary)  |
| Tuguegarao City | San Jacinto  Chapel of St. Hyacinth |
| Iguig | St. James the Apostle (Parish)  |
| Claveria | St. Joseph (Parish)  |
| Peñablanca | St. Joseph, Husband of Mary (Parish)  |
| San Jose | St. Joseph the Worker (Parish, Shrine)  |
| Aparri | San Lorenzo de Ruiz  |
| Tuguegarao City | St. Paul (Chapel)  St. Paul Hospital |
| Tuguegarao City | St. Peter (Cathedral, Parish)  |
| Casambalangan | Sts. Peter and Paul (Parish)  |
| Pamplona | St. Peter the Martyr (Parish)  |
| Alcala | St. Philomena (Parish)  |
| Rizal | St. Raymund Peñafort (Parish)  |
| Gonzaga | St. Roch (Parish)  |
| Sanchez Mira | St. Roch (Parish)  |
| Naruangan | San Roque (Parish)  |
| Tuguegarao City | Santa Rosa de Lima (Parish)  |
| Abulug | St. Thomas Aquinas (Parish)  |
| Camiguin | St. Vincent Ferrer (Parish)  |
| Cordova | St. Vincent Ferrer (Parish)  |
| Pattao | St. Vincent Ferrer (Parish)  |
| Solana | St. Vincent Ferrer (Parish)  |
| Santo Niño | Santo Niño (Parish)  |
| Tuguegarao City | Santo Niño de San Gabriel (Parish, Shrine)  |
| Aparri | Thomas Aquinas (Seminary)  Lyceum of Aparri |