Also see these FAQs:
FAQ: Do I need to file a Federal return this year?
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/do-i-need-to-file-a-federal-return-th...
FAQ: Do I need to file a state return?
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/do-i-need-to-file-a-state-return/00/2...
And see the IRS link to Form 1040 instructions that Champ Mike9241 provided in his comment above for even more detailed info on who should file a Federal return.
