Yailin Mejia was reported missing in Massachusetts after she was last seen on October 25, 2025. Online missing-child listings identify her as an 18-year-old Hispanic female with brown hair and brown eyes, and the National Center for Missing & Exploited Children poster indexed for her case lists the missing date as October 25, 2025, from Boston, Massachusetts.
The same NCMEC listing notes that Yailin may still be in the local area or may travel to Boston, a detail that keeps the focus on the communities around Greater Boston where someone may have seen her, spoken with her, or noticed something that did not seem important at the time.
The public information available about Yailin’s disappearance is limited, but the details that have been released are consistent in their urgency. A missing-child alert republished by Stop Child Abuse lists her first name as Yailin and last name as Mejia, gives her current age as 18 years, identifies her as female and Hispanic, and describes her as having brown hair and brown eyes. That listing gives the missing date as October 25, 2025, and lists Cambridge, Massachusetts, as the missing-from location, while also stating that Yailin may still be in the local area or could travel to Boston. This creates a public picture of a case centered in the Boston-Cambridge area, where the exact movements before and after she was last seen have not been fully described in the online material.
The agencies named in online alerts indicate that anyone with information should contact the National Center for Missing & Exploited Children at 1-800-THE-LOST or the Cambridge Police Department at 1-617-349-3300. The appeal attached to Yailin’s alert emphasizes that even a small piece of information could matter, because in missing-person cases, details that seem minor to one person can help investigators establish a timeline, confirm a sighting, or determine whether a young person remained nearby or traveled elsewhere. Massachusetts officials also direct the public to contact law enforcement with information about missing people, and note that NamUs maintains an active missing-persons database that is updated daily.
As the case stands in the available online sources, Yailin Mejia’s disappearance is described through a short but deeply concerning set of facts: she is an 18-year-old young woman, Hispanic, with brown hair and brown eyes, last seen on October 25, 2025, in the Boston-Cambridge area of Massachusetts. Public alerts do not provide a detailed account of what she was doing before she disappeared, who last saw her, what she may have been wearing, or whether investigators believe she remained nearby or traveled beyond the area; instead, the online record focuses on identifying her, placing her last known location in Greater Boston, and urging the public to contact NCMEC or Cambridge Police with any information. In overview, this is the case of Yailin Mejia, a young woman whose loved ones and community are left with limited public answers after her disappearance from Massachusetts, and whose case depends on witnesses, tips, and careful attention to any information connected to her last known whereabouts.Last Seen: Oct 25, 2025
