Took a quiz on the New York Times web page. You need an account but it's free. I signed up with my Facebook because I just didn't care.
It asks you a bunch of questions and then tells you essentially where you are from. Very accurate result. It told me Lincoln, NE, Wichita, KS, and Denver, CO. Lincoln is pretty much the same as Omaha, I lived in Wichita, and I've visited Colorado Springs a lot for relatives.
I'd say it's pretty accurate.
What does the way you speak say about where you’re from? Answer all the questions below to see your personal dialect map.
www.nytimes.com