I need to mail my return to the IRS. I did my online to be mailed out from Tennesse. Where I should mail it to?

The mailing addresses for the IRS for a Tennessee resident:

• If you are requesting a refund or are not enclosing payment:  Department of the Treasury, Internal Revenue Service, Kansas City, MO  64999-0002
• If you are enclosing payment:  Internal Revenue Service, P.O. Box 931000, Louisville, KY  40293-1000

Mailing addresses for filing Form 1040 (1040EZ, 1040A) are found on the last page of the instructions for Form 1040:  https://www.irs.gov/pub/irs-pdf/i1040gi.pdf