Websep 27, 2021 · there are 20,698 missing persons cases, 13,818 unidentified persons cases, and 11,941 unclaimed persons cases still open and unresolved in the united. Webjun 17, 2023 · (newsnation) — as millions of people head to the u. s. National parks this summer, many may be unaware of the mysterious cases of people who’ve vanished.