What is the legal piercing age in New Jersey?

18 years old (or an imancipated minor) by yourself or under 18 with a parent or legal guardian present.

You must present a photo ID that is state or government issued (Drivers License, County ID, Passport, Student ID, Military ID, etc.), and if you are under 18 your parent or legal guardian must present a photo ID and in the case of guardianship court documentation to prove they are your guardian.

In addition you must be 18 for genital piercings (NO exceptions for imancipation).

Most shops however will not pierce anyone under the age of 15, 16 for the navel, for insurance and moral/ethical reasons.