The news of kidnapping victim Jaycee Lee Dugard's resurfacing after 18 years has certainly renewed interest in non-family child abductions. The Bee's Phillip Reese posted an interactive map showing the rate of stranger kidnappings for every California county during the period 1999-2008.
For a broader analysis of such crimes, the U.S. Office of Juvenile Justice and Delinquency Prevention published a 2003 national report that is dated, but still useful. During the period 1997-99, the OJJDP studied 115 stereotypical kidnappings, i.e. "abductions perpetrated by a stranger or slight acquaintance and involving a child who was transported 50 or more miles, detained overnight, held for ransom or with the intent to keep the child permanently, or killed." In 40 percent of these cases the victim was murdered. In another 4 percent, the child was never recovered.
For the same period, there were an estimated 58,200 child victims of nonfamily abduction, "defined more broadly to include all nonfamily perpetrators (friends and acquaintances as well as strangers) and crimes involving lesser amounts of forced movement or detention in addition to the more serious crimes entailed in stereotypical kidnappings". In 57 percent of these crimes, the child was missing for at least and hour. And 21 percent of the time police were contacted to help find the abducted children.
In both types of abductions, nearly half of the victims were sexually assaulted by perpetrators.