Where can I find my social security number? March 15, 2022 16:13 Updated You can find the social security number on the customer card of your health insurance company, on your pay slip, on your OASI card or on the personal ID card of your pension fund. Related articles Delete my ePlix profile Registration with ePlix Which IDs can I use to register for ePlix ? Can I easily transfer my existing vested benefits balance to ePlix?