Only seven of 'em (well, six and a territory), and as they all have obvious coastlines, I can’t see a quiz being made any time soon. Imagine dividing the US into six bits, then asking somebody to place them on a map. Even an American could do it! 
94% in 202 seconds with an average error of 7 miles. It didn’t help that I accidentally drapped Alaska too early and had it crossing the line around it’s little box.
First try I got 84% with average error of 66 miles. Considering I’m a limey I’m quite pleased with that.
212 seconds, 80%, and average miles off was 38. Oklahoma and Colorado first?
96% Avg. error 5 miles 254 seconds.
I made a few huge 50-70 miles early on, with Utah and another square state. As the easier states go in, the average error dropped from around 25 miles.
Fun game.