If I owe nothing in my Maine State Tax Returns, and am getting nothing back, do I still need to file?

[justingrant94]

I was a part-time resident

[TomD8]

Maine's law is that anyone who is a resident of Maine for any part of the tax year, and has taxable Maine-source income, must file a Maine return.  http://www.maine.gov/revenue/faq/income_faq.html#faq1040_4

Whether you actually owe tax or are getting a refund is irrelevant.