You can file them separately with turbotax, when you get to the end of your Federal return there will be an option to either "Skip State" or Start State" you want to choose "Skip State." However when you do go to file your state taxes you will have to pay the filing fee if you efiled your Federal, the reason for this is that with TurboTax both your Federal and State have to be filed the same way so you will not be able to efile your Federal and mail in your State.
