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  • BOC Census Numident (CNUM)

    The Census Numident is a processed version of the Social Security Administration (SSA) Numident ("Numerical Identification System") file. The file contains one record for every social security...

    Census Bureau
    Last Updated: Jun 26, 2026
    Access Modality: FSRDC
    Fees: Possible seat fee dependent on consortium membership. URL for more information:...
    Topics: Demographics
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