Halia,
The Armenian Apostolic have 4 dioceses in the US and 2 in Canada. The last estimates that I heard for numbers as regards the US jurisdictions was about 25K total active members split roughly in half between 2 dioceses subject to Holy Etchmiadzin (the Mother See of the Church) and 2 prelatures subject to the Catholicosate of Cilicia. The former jurisdictions estimated 45K total adherents, while the latter estimated 25k.
I don't have numbers at hand for Canada, but the total Armenian population up these is estimated at about 40K, roughly 10% of the official census count for Armenians in the US.
Western Diocese of The Armenian Church [armenianchurchwd.com] has its Cathedral in Burbank, with 35 parishes scattered throughout the western US, heaviest concentration in CA
Eastern Diocese of The Armenian Church of America [armenianchurch.net] has its Cathedral in NYC, with 70 parishes throughout the eastern US - heaviest concentration in New England, NY, and NJ
(Father Ron Roberson at CNEWA puts the total parishes for the above 2 dioceses at 120 - but I think he's high. My numbers are in agreement with the diocesan sites and those reported in a recent study of Orthodoxy in the US)
Armenian Prelacy of the Eastern United States [armenianprelacy.org] has its Cathedral in NYC, with 30 parishes and missions throughout the eastern US - heaviest concentration in NY and MA
Western Prelacy of the Armenian Apostolic Church in the United States [armenianprelacy.org] has its Cathedral in La Crescenta, CA, with 8 parishes - all in CA
The diocese/prelature distinction in Canada is identical to that described above for the US.
Armenian Diocese in Canada [armenianchurch.ca] has its Cathedral in Montreal, with 10 parishes - in ON, QC, and BC
Armenian Prelacy of Canada [armenianprelacy.ca] has its Cathedral in Montreal, with 5 parishes - in ON, QC, and BC
Many years,
Neil
