Your social security number becomes public record once you die.
The situation with the Social Security Death Master File (SSDMF) / Social Security Death Index (SSDI) is very similar to the situation with PACER.
List from Nov 2011, obtained legally by http://ssdmf.info/
https://thepiratebay.se/torrent/7193029/Social_Security_Deat...
The SSA would love to insist that redistribution is illegal, because the price of the SSDMF is outrageous and a cash cow, but they don't have a legal leg to stand on. The SSDI is public record, and because it's a database with no creative element, it's not copyrightable even if it were compiled by someone other than the government.
Official sources for the SSDMF:
https://www.ssdmf.com/
http://www.ntis.gov/products/ssa-dmf.aspx