How long is a passport card valid after your 16th birthday?

A passport card is valid for 10 years after a person turns 16. This duration aligns with the rules established by the U.S. Department of State, which states that adult passport cards (issued to individuals aged 16 and older) have a validity of 10 years. It is important to keep in mind that for individuals under 16, the passport card is valid for only 5 years. Therefore, knowing this distinction is key in understanding the overall passport card validity periods based on age.