In 2025 Tokyo police took in 4,850,775 lost items, and 83 percent of the mobile phones went back to their owners, against 1.7 percent of the umbrellas.
Source: Tokyo Metropolitan Police lost-property statistics · How this was built
Under Japan's Lost Property Act an unclaimed item belongs to whoever handed it in, if they claim it within two months. Anything nobody wants becomes the property of the Metropolitan Government. Sorted by the share that found its owner again.
Two separate counts: things people found and turned in, and things people came to the police to report losing. Where the left bar is longer, more items were handed in than reported lost. Where the right bar is longer, more were reported lost than handed in.
Japan's National Police Agency keeps an index of every prefectural lost-property search. Most prefectures share one national database; a few run their own. Items of value are listed across prefectures: cash over ¥10,000, securities, goods worth ¥10,000 or more, identity documents, bank cards and mobile phones. Most of these are Japanese-language only.
Built with AI assistance. Japanese category names were translated by hand and the originals are shown throughout. Figures cover Tokyo only, for the year the Metropolitan Police call Reiwa 7 (2025).