Most applicants who are age 1617 must apply in person using Form DS11. Passports for applicants 16 and older are valid for 10 years.For detailed instructions on how to apply, please see Applicants Age 16 and 17. Fill out a Form DS-71 in the presence of a passport agent. For Minors Under the Age of 16. Find out how to apply for or renew a passport for an adult or a minor under 18. Know what to do if a passport is lost or stolen.