San Lorenzo de Manila Church (under St. Peter Thelmo Parish) - Lyceum of Aparri, Aparri, Cagayan

San Isidro Labrador Parish - Nabaccayan, Gattaran, Cagayan

Our Lady of Miraculous Medal Parish - Magapit, Lal-lo, Cagayan

St. Dominic de Guzman Parish - Centro, Lal-lo, Cagayan

St. Catherine of Alexandria Parish - Centro, Gattaran, Cagayan

San Isidro Labrador Parish - Dugo, Camalaniugan, Cagayan

St. Vincent Ferrer Parish - Camiguin Islands, Babuyanes, Cagayan

St. Hyacinth of Poland Parish - Camalaniugan, Cagayan

St. Bartholomew Parish - Calayan Islands, Babuyanes, Cagayan

Archdiocesan Shrine of Our Lady of the Rosary and St. Peter Thelmo Parish - Centro, Aparri, Cagayan

Our Lady of Peace and Good Voyage Parish - Tallang, Baggao, Cagayan

Archdiocesan Shrine and Parish of St. Joseph the Worker - San Jose, Baggao, Cagayan

St. Dominic de Guzman Parish - Centro, Baggao, Cagayan

Our Lady of the Most Holy Rosary Parish - Centro, Amulung, Cagayan