These are my own definitions. Other missing persons organizations/websites may have different ideas of what these mean.
- The default classification for adults under 65.
- The default classification for minors (under 18) and elderly persons (over 65). An adult between those ages will be listed as Endangered Missing if they have a medical condition or are missing under circumstances that indicate they may be in danger.
- A minor missing under circumstances which indicate that he or she left voluntarily.
- A minor who is believed to have been taken by a family member, such as a parent, who does not have legal custody and/or a legal right to take the child.
- A person of any age missing under circumstances that strongly indicate they had an accident that caused their disappearance, or that they became lost in a wilderness area. Foul play is not suspected in these cases. Most probable suicides are included; people who wandered away as a result of mental illness or dementia are not included. An example of a lost/injured missing person would be someone who disappeared on a rafting trip.
- A minor who is believed to have been abducted by a non-family member.