Familysearch.org--Social Security Death Index
This resource uses data from the Social Security Administration to provide information, such as the social security number, date of death, place of death, and birth date, on more than 76 million individuals. The index includes death information from 1962 to present. It currently contains 50 percent of deceased persons from 1962 to 1971 and about 85 percent of the deceased persons from 1972 to 2005. The website allows you to search by life events or relationships.