Kate has expressed concern that the number of books issued from public libraries in Trafford has fallen by more than 376,500 since 2011.
While some of the fall may be down to readers making use of e-readers, the number of books borrowed in the borough has decreased by 43 per cent, from over 870,000 in 2011 to under 500,000 in 2018.
The research, commissioned from the House of Commons Library, comes ahead of World Book Day on Thursday 7 March.
World Book Day is an occasion to celebrate reading. It is marked by over 100 different countries and celebrates authors, illustrators, and books.
In the North West region, the number of books borrowed has decreased by 45 per cent, from over 33.5 million in 2011 to under 18.5 million in 2018.
Previous research shows that library book stock has fallen by 29 per cent in the North West since 2010/11.
521 libraries have closed across England since 2010, including three libraries in Trafford.
Cuts to library services damage the learning opportunities of children and young people, and impact on older people looking for company and comfort.
Kate says: “World Book Day is a great opportunity to celebrate the joy of reading. Books open up whole new worlds for children and adults alike.
“That’s why it’s worrying that hundreds of thousands fewer books are being issued from our public libraries.
“Libraries are at the heart of our community and I hope people use this World Book Day as an opportunity to support one of our fabulous local libraries”.