There are two methods available for renewal of passports: by mail and in person at a passport agency. Online renewal is not available.
Renewal by Mail
The U.S. Department of State guidelines indicate that a passport may be renewed by mail if it meets the following parameters: undamaged and can be submitted with your application, was issued when you were age 16 or older, was issued within the last 15 years and was issued in your current name or you can legally document your name change.
Renewal in person
A passport must be renewed in person at a passport agency if it meets the following parameters: applying for the first time; under age 16 or previous passport was issued under age 16; previous passport was lost, stolen or damaged; was issued more than 15 years ago; or a name change has occurred that cannot be substantiated with legal documents.
Evidence of U.S. citizenship and identification must be provided when applying for a passport. In addition, submission of government form DS-11, two passport photos and payment of fees is necessary to complete the application process.
While passport renewal cannot be complete online, the U.S. Department of State provides a variety of applications and forms for passport-related services. In addition, a passport application wizard tool is available to assist with identifying the proper forms for passport renewal.
Being prepared and submitting proper evidence of citizenship and identification and to the passport agency will simplify and streamline your application process. Passport applications generally require six to eight weeks to process, so if you plan to travel prior to that time, it is best to apply for the passport with an agency, even if the renewal by mail requirements are met.