I have to mail in my taxes, what mailing address do I mail them to?

When you print to file by mail there will be instructions with the addresses for your federal and state returns.   Mail them in separate envelopes.

https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment

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.

Federal and state returns must be in separate envelopes and they are mailed to different addresses.  Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.