No one else can see your state return so we can only offer best guesses. You may not have had enough state tax withheld from your paychecks to provide a refund. Or you may have made a mistake when you entered your state income and state tax withheld from boxes 16 and 17 of your W-2's, so double check what you entered.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**