joel9999,
The TIAA site says on page https://www.tiaa.org/public/support/tax-statement-schedule that you should go to the website https://bny.mn/TaxResources and follow the instructions there to use the Tax Supplemental Information tool on the right hand side of that page. That tool states:
To help you complete your tax returns, our Supplemental Information tool provides the percentage of tax-exempt, in-state municipal income and the percentage of income from government agencies and the direct federal and foreign sources for a particular fund. You multiply the Box 1 dividend by the percentage given by that tool to yield the government agency portion. The in-state municipal income percentage for your state will also be useful as 100 minus that percentage is the portion that will be taxable by your state.
You should also be able to go to the website of each individual investment mutual fund and dig the state information from there.
