Most applicants who are age 1617 must apply in person using Form DS11. Passports for applicants 16 and older are valid for 10 years.Fill out your form(s) online and print it. All required supporting documents for the form(s). Complete Application and Collect Documents. Application and documents vary based upon applicant's age and circumstances. - 10 years for adults - 5 years for minors. The State Department has listed the necessary documents needed as well as the form you must fill out on their website. Passports for all minors under 16 and those aged 16 or 17 who cannot have both legal guardians present. Apply for or renew a child's passport inside or outside the U.S. Get a child's passport quickly.