If you change your address after filing your return, you should notify the post office that services your old address. Because not all post offices forward government checks, notifying the post office that services your old address ensures that your mail will be forwarded, but not necessarily your refund check.
To change your address with the IRS, you may complete a Form 8822.pdf, Change of Address.
Please view the IRS link below for more information.
https://www.irs.gov/taxtopics/tc157
Please contact the state department of revenue for directions on changing your address. Click on your state hyperlink in the TurboTax FAQ below.
https://ttlc.intuit.com/replies/3302452
