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Health and social security

Where do I find my social security number?

Your social security number (15 digits) is written on the front of your carte Vitale, on your payslips and on your certificate of entitlement (“attestation de droits”).

Fictitious model: Carte Vitale (health insurance card) On the front of the carte Vitale, below your name; also on the payslip, “Salarié” box Social security number 15 digits, starts with 1 (man) or 2 (woman) Fictitious document · Carte Vitale (health insurance
Fictitious model of “Carte Vitale (health insurance card)”. Area: On the front of the carte Vitale, below your name; also on the payslip, “Salarié” box · Format: 15 digits, starts with 1 (man) or 2 (woman).

Where to find it online

  • ameli.fr account or ameli app: the number is shown under “Mes informations” and on the certificate of entitlement you can download.
  • It also appears on your payslips and on letters from the CPAM, the CAF and France Travail.

If you have lost it

  • Download the certificate of entitlement from your ameli account: the number is on it.
  • With no account, your CPAM can give it to you on 3646 or at the desk, if you show an ID.
  • If you have never been registered, the request is made to the CPAM (or the MSA) with a birth certificate and an ID.

Official sources

Checked on 28/09/2026.

See also

Find this number in my letters

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