You will need to print and mail your own return if you choose to file a paper return or you are prompted to mail the return. TurboTax doesn't mail returns.
This link will give you the instructions on how to print and mail if you are using the TurboTax Online version of the software https://ttlc.intuit.com/questions/1944348
The address should be on the instructions sheet that prints out with your state return. Of you can check your State Department of Revenue website to get the address you will need to mail your state return to. You can go here https://ttlc.intuit.com/questions/1901670 and select your state and it will take you to their contact page.