Midland. The Midland (please don't confuse with "Midwest") itself is the neutral zone between the North and South. But just because you have a Midland accent doesn't mean you're from there. Since it is considered a neutral, default, "non-regional" accent you could easily be from someplace without its own accent, like Florida, or a big city in the South like Dallas, Houston, or Atlanta.
Northern. Whether you have the world famous Inland North accent of the Great Lakes area, or the radio-friendly sound of upstate NY and western New England, your accent is what used to set the standard for American English pronunciation (not much anymore now that the Inland North sounds like it does).