Hey Jessica,
I usually use this tool to accomplish this task. It creates A LOT of polygons, but it gets the job done. The other approaches suggested will help you get rid of overlap and get similar answers but this one does returns shapes.
https://www.arcgis.com/home/item.html?id=1dd4a6832b3d40b494dbf8521cc5134c
I actually just used it to create this map of willingness to travel overlap in Florida.
David
I should clarify more, that Intersect does work, but it gives back all of the places where the overlap is and however many times it overlaps -- ie: if it is overlapped by 3 other polygons, the layer contains that polygon 3 times.
So I want what the Intersect gives back BUT I just want 1 record of each.
Thanks again!