The Archdiocese of Liverpool extends from the Mersey to the Ribble and encompasses parts of Lancashire, north Cheshire, Greater Manchester and the Isle of Man. It is divided into separate administrative or deaneries which are each overseen by a Dean and a sub-Dean:
- Bootle and Litherland
- Chorley
- Crosby
- Croxteth and Walton
- Isle of Man
- Knowsley
- Leigh
- Leyland
- Liverpool North
- Liverpool South
- Ormskirk and Maghull
- St Helens
- Southport
- Upholland
- Warrington
- Widnes
- Wigan
- Woolton and Halewood