For how many years are decennial census records kept confidential to protect privacy?

The decennial census records are kept confidential for 72 years to protect the privacy of individuals. This policy is rooted in legislation that aims to ensure that personal data collected during the census cannot be used against respondents or disclose sensitive information about them during their lifetime. The 72-year confidentiality period allows sufficient time for historical research and data analysis while safeguarding the identities of those who participated. This specific duration is consistent with the practices of various archival institutions, which often maintain restrictions on access to personal data for similar reasons.