Town Hall chiefs have announced the death of Haydock Councillor Bill Anderton.
The Union Jack flag is being flown at half-mast as a mark of respect.
A short statement issued by the council read: “St Helens Council is saddened to announce the death of Councillor Bill Anderton.
“Coun Anderton has passed away at the age of 59 following a recent illness.
“He represented the Haydock Ward from 2010.”