Solved
I had to do an amended tax return because I forgot to enter in a w2 and it said I needed to mail in my 1040ez, but I didn't print or save the address it wanted me to send it to. It was some where in Austin, TX.
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 1040EZ":
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