[toast0]

> social security numbers are assigned sequentially by geographic region so if you know someone’s SSN you can get their date of birth or vice versa.

Note that enumeration at birth is a recent policy change. Before enumeration at birth, people would not get assigned a number until they (or their parents) asked for one. So while there is a sequential numbering (before that changed) and its tied to geography, the sequence and geography is connected to time and place of assignment, not time and place of birth.

For example, my parents got SSNs for me and my siblings all at once, sometime in the 80s, I beleive as it became required to claim dependents on tax returns. I don't think our SSNs are sequential, but they're close; however my siblings and I have different birth years and could have been born in different states than where we were enumerated.