Unfortunately you can't change the address shown on a tax return if
you've already filed it. However, if you requested an electronic direct
deposit of your tax refund, then your mailing address should not matter.
To change or update your address independently of your tax
return, you can file Form 8822 with the IRS. It's a simple one-page
form with one page of instructions. You can fill it out by hand and
file it by regular mail. Here is a link to that document: https://www.irs.gov/pub/irs-pdf/f8822.pdf
You will also need
to contact your state to inform them of the mistake with your address.https://ttlc.intuit.com/questions/1901670-how-do-i-contact-my-state-department-of-revenue
