 There is a former Cathedral, St. Mary’s Pro-Cathedral, also in Hamilton and a minor basilica, Our Lady Immaculate, in Guelph, Ontario.As per 2014, it pastorally served 626,723 Catholics (28.5% of 2,201,155 total) on 16,824 km² in 124 parishes and 1 mission with 228 priests (137 diocesan, 91 religious), 35 deacons, 269 lay religious (102 brothers, 167 sisters) and 15 seminarians.The Diocese of Hamilton comprises the counties and regions of Brant, Bruce, Grey, Halton, Waterloo, Wellington, Wentworth, as well as four Townships in the County of Dufferin, all located in Ontario.