When you print your return for mailing it will print with mailing instructions that give you the address to mail the return to. But if you already filed or just want the address to mail your payment:
https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment
If you have federal tax due you can pay by mailing your payment with the 1040V voucher (the mailing address is on the form), having the payment taken out of a designated bank account, or you can pay directly on the IRS website.
https://www.irs.gov/payments/direct-pay
https://ttlc.intuit.com/community/tax-payments/help/how-can-i-pay-my-federal-taxes/00/26212
TurboTax will print a filing instruction sheet with your tax return with the address for where to send your return.
If you don't see it, here is where to find where to mail it: https://www.irs.gov/uac/where-to-file-paper-tax-returns-with-or-without-a-payment?_ga=1.31357439.1770841720.1470007833