Cornwall among favourites for over 65s
Cornwall had the second largest migration of adults in England aged over 65 in 2009, according to figures compiled for the BBC.
The county had 1,200 incomers in the year, second only to Wiltshire.
The research, done by Experian, looks at how areas of England will be affected by an ageing population.
For many of those incomers, starting a new life in Cornwall can be a difficult adjustment, but one couple have shown how to succeed.
Richard Voase, specialist in the sociology of tourism at the University of Lincoln, said: "When people retire, places where they have been on holiday are the first places they will look, which is one of the reasons why Cornwall is so popular.
"But when you retire to somewhere like that the undiluted pleasure is accompanied by the responsibilities of the every day.
"Moving to another community can be very difficult when you are living alongside people that have known each other for decades."
Former optician Roger Sharratt, 88, and wife Elizabeth, 87, moved to Cornwall from Chichester in Sussex three years ago.
Mrs Sharratt, who had lived with her family in Cornwall as a child, said: "I am very, very glad we came back.
"We have had the time of our lives because we joined the church.
"We had been told it might be difficult, but it wasn't. People have been great."
Both keep fit by swimming and playing croquet where they live at Roseland Parc retirement village in Tregony.
Mrs Sharratt, who also teaches digital photography at a local University of the Third Age group, added: "Some people find it difficult because they don't adapt.
"You've got to give and take.
"But we have made more friends in three years here than we made in 15 years in Sussex."