What parts of the Northern USA have southern accents?

Wow! that first answer is amazing!! Has no business here but it's cool. I have never been anywhere outside the south where I have heard a southern accent. That certainly doesn't mean there isn't any, I just haven't heard them. But, I should also point out that there are many different "southern" accents. For instance, the people here in North Carolina have a very different accent from people in Texas. And people in Virginia have different accents than people in Louisiana, especially the cajun parts! I love the Virginia accent - it's really a beautiful accent. But all of those would be considered "southern" accents ever though they are so different. I am from New Mexico and I've been told we have no accent. How can that be??? I know we do - it's just different from southern or northern or cajun or whatever.