Catholic Intelligence

Diocese of Ilagan

Ilaganen(sis)

The Diocese of Ilagan is a Latin Church diocese covering the province of Isabela in the Philippines. Erected in 1970, it is a suffragan of the Archdiocese of Tuguegarao and was sede vacante as of late 2025 following the departure of Bishop David William Antonio.

The see

Rank
Suffragan diocese
Tradition
Latin Church
Erected
31 January 1970
Latin
Ilaganen(sis)
Patron
Saint Ferdinand of Castile and Our Lady of the Visitation of Guibang
Annuario code
001001651

The see in figures

Catholics
1,368,520
Population
1,741,750
Catholic share
78.6%

of the people living within its bounds

Priests
38
Catholics per priest
36,014
Extent
12,556 km²
Catholics per km²
109

Figures as recorded in the register, from the Annuario Pontificio and the see's own published statements. Shares and ratios are computed from the two figures shown beside them.

The bishop

Bishop
David William Valencia Antonio

A see whose chair stands empty is recorded as vacant rather than filled with a guess. On what a bishop is, see the bishop.

The cathedral

Cathedral of Saint Michael the Archangel stands in Ilagan, the church that holds the cathedra from which this see takes its name.

Its co-cathedral is St. Ferdinand Co-Cathedral, Ilagan City.

On what a cathedral is, see the cathedral; every see church on earth is gathered at the cathedrals.

The province of Tuguegarao

A suffragan of Archdiocese of Tuguegarao.

The sees of this province:

On how the Church is ordered into provinces, see the diocese.

History

Erected on 31 January 1970 out of the then Roman Catholic Diocese of Tuguegarao, the Diocese of Ilagan (Latin: Dioecesis Ilaganensis) is a Latin Catholic diocese of the Philippines covering the whole civil Province of Isabela. Because Tuguegarao was not yet a metropolitan diocese when Ilagan was created, the new see fell under the jurisdiction of the Archdiocese of Nueva Segovia.

What is kept by invitation

The record above is published because it is public: what this see is, when it was erected, who holds its chair, and where it stands among its neighbours.

The working record is not. The chancery's address, telephone and email, the clergy of the see, and the hours of Mass, confession and adoration in the parishes within it are kept for members, and a person reads every request.

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Sources

The see's own website · Wikipedia

This record is compiled from the published statements of the see and the references of the Holy See, among them the Annuario Pontificio. On the method, see the keeping of the record. Whoever finds an error is asked, in charity, to write: [email protected].