What does the social security number mean?

Verified 02 September 2024 - Directorate for Legal and Administrative Information (Prime Minister)

Registration in the National Directory of Identification of Natural Persons (RNIPP) shall give rise to the award of a directory registration number (NIR).

NIR is also called social security number.

This number is dialed:

  • From 13 digits
  • And a control key of 2 digits.
Infographie - Social security number
Illustration X - Social security number - plus de détails dans le texte suivant l’infographie
Illustration X
Crédits: Direction de l’information légale et administrative

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Social security number under the microscope:

  • Control key
  • Birth Order No.
  • Insee Common Code
  • Department of Birth
  • Month of birth
  • Year of birth
  • Sex

Social security number

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Social security number - plus de détails dans le texte suivant l’infographie
Crédits: Service Public (DILA)Infographie - Social security number

Social security number under the microscope:

  • Control key
  • Birth Order No.
  • Insee Common Code
  • Department of Birth
  • Month of birth
  • Year of birth
  • Sex

It may be helpful to know your Social Security number by heart.

Here's a way to hold him.

Tableau - Composition of the social security number

Numbers

Meaning

1er digit

Gender:

  • 1: Male
  • 2: Female
  • Next 2 digits

    Year of birth

    Next 2 digits

    Month of birth

    Next 5 digits

    Place of birth:

  • 2 digits of the code of the birth department (this code is the one existing at the time of birth)
  • 3 digits of the official common code of theInsee: titleContent
  • If you are foreign born : the 2 digits of the department code are replaced by 99 and the common code by an Insee code of the country of birth

    You are born in Algeria, Morocco or Tunisia before independence of these countries: a specific code may be used instead of the code 99 and the INSEE code of the country concerned (examples: 91, 92, 93 or 94 for Algeria, 95 for Morocco and 96 for Tunisia)

    Next 3 digits

    Serial number to distinguish persons born at the same place in the same period

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