dataprivacylab.org

M7gp0 TIL that if you're American, there is a roughly 87% chance you are the only person of your sex with your date of birth in your zip code. [PDF]
6KpQ TIL that according to a 2000 study from Carnegie Mellon University, 87% of the U.S. Population can be uniquely identified using only date of birth, gender, and ZIP code.
ZDrp TIL that 87% of the population of the United States is uniquely identifiable with only your zip code, date of birth, and gender.