I couldn't resist making my own map after my sister-in-law posted hers.
visited 22 states (44%)
Create your own visited map of The United States
Actually, there are probably a few that I forgot because I visited them when I was so young that I don't remember. So, I will just have to go again someday.
As for countries, here is how it looks for me:
visited 13 states (5.77%)
Create your own visited map of The World
Of course, this map is deceiving because it appears as if I have traveled to every US State (obviously, I have not), and extensively through Canada (have not). And it's so small you can't tell which European countries I have visited (UK, Austria, Germany, France, Belgium, Netherlands, Switzerland).
I have a ways to go.