Revisiting the Uniqueness of Simple Demographics in the US Population
Author:
P. Golle
Abstract:
According to a famous study [Swe00] of the 1990 census data, 87%
of the US population can be uniquely identified by gender, ZIP code and
full date of birth. This short paper revisits the uniqueness of simple
demographics in the US population based on the most recent census data
(the 2000 census). We offer a detailed, comprehensive and up-to-date
picture of the threat to privacy posed by the disclosure of simple
demographic information. Our results generally agree with the findings
of [Swe00], although we find that disclosing one's gender, ZIP code
and full date of birth allows for unique identification of fewer
individuals (63% of the US population) than reported in [Swe00].
We hope that our study will be a useful reference for privacy researchers
who need simple estimates of the comparative threat of disclosing various
demographic data.
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