This depends on the service you have chosen. If you have decided to apply for a routine passport, the processing time is from 12-16 weeks. The processing time can get extended by 2 to 3 weeks more if there is an increase in passport application submissions during peak travel times. This is usually when the holiday season approaches and people plan for vacations.
If an expedited passport agency service such as 24 Hour Passport and Visas has been used, the processing time is under 3 weeks and in some cases, it can be expedited within 24 hours.
An additional fee is charged in order to speed up the processing of your application. Check 24 Hour Passport and Visas pricing here.