For the Federal, it depends on the state you live. Click on the link below to find the mailing address.
Where to file paper tax returns with or without a payment
For the state, you need to go to your State Department of Revenue website, or reply to this thread with your state of residency and we will help you locate the address.
Address for California refund taxes, and address for federal refund
As Nicolle told you, the federal address varies depending on what state you live in and whether or not you are getting a refund. In your case, you use:
Department of Treasury
Internal Revenue Service
Ogden, UT 84201-0002
As for California, for someone with a refund, use
Franchise Tax Board
PO Box 942840
Sacramento, CA 94240-0001