Roman Catholic Diocese of Calgary

Diocese of Calgary

Diœcesis Calgariensis
St Mary's Cathedral
Location
Country Canada
Ecclesiastical provinceEdmonton
Statistics
Area110,500 km2 (42,700 sq mi)
Population
  • Total
  • Catholics
  •  
  • 1,208,121
  • 546,400 (45.2%)
Parishes67
Information
DenominationCatholic
Sui iuris churchLatin Church
RiteRoman Rite
Established30 November 1912
CathedralSt. Mary's Cathedral
Secular priests131
Current leadership
PopeLeo XIV
BishopWilliam McGrattan
Metropolitan ArchbishopStephen Andrew Hero
Map
Website
www.calgarydiocese.ca Edit this at Wikidata

The Diocese of Calgary (Latin: Diœcesis Calgariensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Alberta, Canada. The Diocese of Calgary is a suffragan diocese of the metropolitan Archdiocese of Edmonton.

Its cathedral episcopal see is St. Mary’s Cathedral, Calgary, Alberta. It is currently led by Bishop William McGrattan.

History

The diocese was established on 30 Nov. 1912 as Diocese of Calgary, Latin adjective Calgarien(sis), on territory split off from the Diocese of Saint Albert.

Bishops

Diocesan ordinaries

(all Roman Rite)

Suffragan Bishops of Calgary

Auxiliary bishop

Statistics and extent

It includes the Calgary Region, all of southern Alberta and the extreme lower half of the Alberta's Rockies region.

As per 2014 it pastorally served 538,000 Catholics (45.5% of 1,183,000 total) on 110,500 km² in 69 parishes with 158 priests (123 diocesan, 35 religious), 50 deacons, 166 lay religious (46 brothers, 120 sisters) and 10 seminarians.

The diocese contains 82+ parishes and missions specifically: 37 parishes in Calgary alone; of which, 10 are ethnic parishes, an additional university parish to serve the University of Calgary and 45+ parishes and missions designated for southern Alberta and the Rockies lower region. On December 3, 2017 Bishop McGrattan announced his intention to make Our Lady of the Rockies Parish in Canmore into a Diocesan Marian Shrine in the spring of 2019.

In 2006: 87 diocesan priests, 38 religious priests 427,200 Catholics. 110 women religious, 48 religious brothers and 30 permanent deacons make up the spiritual work force in Calgary not including the other regions.

In 2026, the diocese reported a 50% increase in the number of people wanting to join the church since the COVID-19 pandemic, with Church’s Rite of Christian Initiation of Adults instructor Brian Trafford saying that the diocese saw a record number of converts in both 2025 and 2026.

Calgary city Parishes

Rural Parishes and Missions

See also

References

  1. 1 2 3 Annuario Pontificio per l'anno 2017 (Città del Vaticano: Libreria Editrice Vaticana, 2017), 136.
  2. ↑ "Appointments and Installations – Apostolic Nunciature in Canada".
  3. 1 2 "Diocese of Calgary, Canada".
  4. ↑ "Home". rockiesparish.com.
  5. ↑ "Canadians are joining the Catholic church in record numbers, officials claim". Global News. 7 April 2026. Retrieved 5 September 2026.

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