The mailing address to file your federal income tax return will
vary, based on which state you live in (or if you live outside of the U.S.),
and on whether you enclosing a payment or not. Please see the following
IRS guide, "Where to File Addresses for Taxpayers and Tax Professionals
Filing Form 1040":
https://www.irs.gov/uac/where-to-file-addresses-for-taxpayers-and-tax-professionals-filing-form-1040
For the
mailing address for filing your state tax return (if applicable), please refer
to the instructions for your state tax return.