Montana

1,127 murders reported in Montana from 1976 to 2025; police reports named an offender in about 91%. Explore the statistics →

Cases that span several states show only their locations in Montana. Open on the big map

Cases

Ted Kaczynski
1978–1995 · Lincoln, Montana
SerialPleaded guilty14 victims
Between 1978 and 1995 Ted Kaczynski, a former mathematics professor living in a remote cabin near Lincoln, Montana, mailed or planted 16 bombs that killed three people and injured more than 20 at universities, an…
Joseph Duncan
1996–2005 · Coeur d'Alene, Idaho
SerialConvicted7 victims
Joseph Edward Duncan III, a convicted sex offender who had served prison time for raping a boy in 1980, killed Brenda Groene, her fiancé Mark McKenzie and her 13-year-old son Slade at their home near Coeur d'Alene,…
Murder of Sherry Arnold
2012 · Sidney, Montana
SinglePleaded guilty1 victim
Sherry Arnold, a 43-year-old math teacher at Sidney High School in Montana, was abducted at random while out on a morning run near her home on January 7, 2012, and killed.
Wayne Nance
1974–1986 · Missoula, Montana
SerialIdentified, never tried5 victims
Wayne Nance, a furniture mover from the Missoula area, was never charged with a crime.