Per Wikipedia: The states in dark red are almost always included in modern day definitions of the South, while those in medium red are usually included. Maryland and Missouri are occasionally considered Southern, while Delaware is only rarely considered part of the South. Oklahoma is sometimes considered Southern because the area of Oklahoma, then known as Indian Territory, was allied with the Confederacy. West Virginia is considered Southern by many, because it was once part of Virginia.
For those that do not wish to click the link, the states always counted as being Southern are listed as Arkansas, Tennessee, North Carolina, Mississippi, Alabama, Georgia, and South Carolina while those that are usually considered Southern are Kentucky, Virginia, Texas, and Florida. Those that are only sometimes considered Southern are Oklahoma, Missouri, West Virginia, Maryland, and Delaware.
What I’m curious about is who does not consider Kentucky and Virginia as being Southern. I know that Northern Virginia is pretty much considered a suburb of DC and many residents of the area claim it to not be Southern but the state as a whole definitely is. And Kentucky? How is it not Southern? Because it was a border state? I can see the argument for West Virginia being Midwestern but I flatly refuse to believe Kentucky could be considered such.
What are your opinions?