The Upper Grand District School Board administers all of Wellington County, as well as adjacent Dufferin County, while the Wellington Catholic District School Board administers Catholic education in Wellington County, including Guelph.
County Durham | Orange County | County Cork | St. Louis County, Minnesota | County Galway | County Mayo | county | Montgomery County | Los Angeles County Museum of Art | Lancashire County Cricket Club | Westchester County, New York | Nassau County, New York | County Antrim | Rockland County, New York | County Down | Washington County | Hillsborough County | Derby County F.C. | County Meath | County Donegal | Erie County, New York | County Tyrone | County Tipperary | County Louth | County Armagh | Wayne County, Michigan | Somerset County Cricket Club | Los Angeles County | Jefferson County | Glamorgan County Cricket Club |
There are 1.6 million Catholics worshiping in 223 parishs in the Archdiocese, in Toronto itself, York Region, Peel Region, Simcoe County, Dufferin County, and Durham Region.