is a roth ira contribution reported as income?

at the end of the year when you file taxes or does it increase your agi (aggregate gross income)? i ask because of the earned income tax credit and if it would have any affect on that because you have to make under a certain amount. i was going to make a $5000 roth ira contribution.
so if my agi for the year was 41,000 and i made a contribution to my traditional ira instead of my roth ira, it may lower the agi 41,000 amount?