Investors & landlords

Yes.  The general rule is that your resident state taxes all income regardless of where it was earned.

Then to avoid double tax, most states provide a credit for taxes paid in other states.  Since you were not taxed on this income in the other state, no need for any credit.

*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.