Most applicants who are age 1617 must apply in person using Form DS11. Passports for applicants 16 and older are valid for 10 years.ALL APPLICANTS (including children) must personally appear when applying for a passport. Use if you are applying for the first time, for your child who is under age 16, or you don't meet our requirements to renew your passport. Contact Passport Division ; Phone Number (385) 468-7300 ; Mailing Address 2001 South State Street , Ste S2-200. Children under 16 years of age must have both parents present. Children 16 and 17 years of age must have one parent present. All children under age 16 must apply for a passport in person with two parents or legal guardians. Applications for children 16 and 17 years of age require the presence and signature of one parent. Step 4: Post appointment.