Young will be the first pop singer to perform at the 20,000 acre country seat, which welcomed opera singer Katherine Jenkins and thousands of her fans last year.
Although the Queen is unlikely to attend the August 7 event, a spokeswoman for the estate indicated to the Sunday Mirror that it is expected to be a sell-out.
She said: "We've already had a great deal of interest from four corners of the country. As it's set in the beautiful Sandringham parkland, there will be plenty of room for everyone who wants to come along." Tickets, priced £32.50, are available from the Tickets East agency.