Most applicants who are age 1617 must apply in person using Form DS11. Passports for applicants 16 and older are valid for 10 years.Contact Passport Division ; Phone Number ; 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 APPLICANTS (including children) must personally appear when applying for a passport. The Salt Lake City Public Library is an official passport application acceptance facility. To fill out this application, at least one parents needs to appear. Any minors who are 17 years old must also appear in person during the application process. Evidence of your U.S. citizenship, such as a previous passport or your birth certificate.