Lost Passport FAQ
No, your new passport will have a different number than has never been used on any other passport.
The new passport you get when you get your lost passport replaced will be valid for a full 10 years. (If you are under age 16, your passport will be valid for 5 years.)
Yes, it does. You are expected to turn in your most recent passport when you apply for a new one, so if you have lost your expired passport you will need to go through the lost passport replacement procedure described on this page.
If you find your lost passport after you have started the replacement process, that passport is considered cancelled and is no longer valid for travel. As soon as you have filed the DS-64 form, the State Department will cancel the passport you lost. This is a safety procedure so that if someone else finds your passport, they can not use it.
If you lose your passport overseas, you will need to go to the nearest US consulate to have your lost passport replaced. All of the same requirements for getting a lost passport replaced will apply.