This study sought to quantify the increased risk of suicide associated with registering in local hotels/motels. Medical examiner case files of suicide in King County, Washington were reviewed for 2002-2004. The rate of suicide in local residents registering in local hotels/motels was 223/100,000, significantly greater than the incidence of suicide in the general population of King County (11.7/100,000). Hotel/motel guests from outside Washington had a significantly reduced rate of suicide, 3.9/100,000. (8 refs.)