About Us

The Diocese of St Catharines in Ontario was erected by Pope Pius XII on November 9 1958 by a division of the Archdiocese of Toronto and the Diocese of Hamilton. It comprises the Regional Municipality of Niagara and the County of Haldimand, of Haldimand-Norfolk Regional Municipality.

Map of the Diocese of St. Catharines

Map of the Diocese of St. Catharines

The Diocese of St. Catharines has a Catholic population of approximately 154,900 in 46 parishes and missions, served by 57 diocesan priests, 34 priests who are members of religious orders, 20 permanent deacons and 33 religious Brothers and Sisters.