The Filing Instructions page has the information for what forms and schedules are to be included in the mailed tax return along with the address for where to mail.
If you are mailing your tax return instead of e-filing, be aware that it is taking a very long time for the IRS to process mailed returns---it will take months. Use a mailing service that will track your mailed return so that you will know the IRS received it.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**