The Roman Catholic Diocese of Salford is centred on the City of Salford in Greater Manchester, England. The diocese was founded in 1850 as one of the first post-Reformation Catholic dioceses in Great Britain. Since 1911 it has formed part of the Province of Liverpool. Its current boundaries encompass Manchester and a large part of North West England, between the River Mersey and the River Ribble, as well as some parishes north of the Ribble and Todmorden in Calderdale, West Yorkshire. Stonyhurst College is also within the diocese. In 2005, the diocese included 207 churches and chapels.