If your address is wrong with the IRS, you need to fill out form 8822 and mail it to them. Since you are using direct deposit, your refund won't be affected, but you may not get important correspondence from the IRS if you don't update your address. Also, if there is any kind of problem with your direct deposit, the IRS mails a check to the address on file with the IRS. For this reason alone, it is important to have your current address on file with them. As Carl mentions above, having it correct in TurboTax doesn't matter. The address on your tax return is what counts.
Here is the form with instructions and mailing addresses included; it is much more simple than an amended return. Print it out, sign it and mail it as soon as possible. Don't amend your tax return for an address change. 8822 - Change of Address IRS
