A Cabinet Office spokesperson told CNN said a version of the list - which includes lawmakers, celebrities and senior police officers - had been uploaded by mistake and has been taken down.
The list of honors is published biannually, once at New Year's and then again for the Queen's birthday, and recognizes excellence in a spectrum of pursuits, ranging from arts and athletics to science and politics.
This year's list - made up of 1,097 people in total - included famous faces such as Elton John, "Grease" star Olivia Newton-John, and director Sam Mendes.
A government spokesperson said in a statement: "A version of the New Year Honours 2020 list was published in error which contained recipients' addresses. The information was removed as soon as possible. We apologise to all those affected and are looking into how this happened.
"We have reported the matter to the ICO (Information Commissioner's Office) and are contacting all those affected directly."
Winners receive their medals during 30 or so separate Investiture ceremonies throughout the year at Buckingham Palace or Windsor Castle.
Queen Elizabeth II dubs newly minted knights with a sword that previously belonged to her father, George VI.
The road to success and the road to failure are almost exactly the same.