The mailing address to file your federal income tax return to the IRS from Washington State will depend on whether you enclosing a payment or not:
Use this address if you are enclosing a payment:
Internal Revenue Service
P.O. Box 7704
San Francisco, CA
94120-7704
Use this address if you are not enclosing a payment:
Department of the Treasury
Internal Revenue Service
Fresno, CA 93888-0002
The mailing address for your tax return(s) is normally printed on your filing paperwork. If you don't see that address, then you can find it below:
The mailing addresses for your federal return are as follows:
If you are claiming a refund then mail your return to:
Department of Treasury
Internal Revenue Service
Fresno, CA 93888-0002
If you are mailing a payment then mail your return to:
Internal Revenue Service
P.O.Box 7704
San Francisco, CA 94120-7704