Updated: Sep 22, 2019
The U.S. Social Security Death Index contains over 94 million records of people who died between 1935 and 2014. The file may include the first and last name, social security number, state issued, birth date, death date, and last residence. With a subscription to Ancestry.com, you can access these records. If not, you can visit FamilySearch to access the index free of charge.
Tip: If you know the person's social security number,
you can determine what state it was issued in just by looking at the number.