I found the profile of the United States economy in this article to be a very innovative and logical way to categorize the United States. The author looks at the United States economy as a grouping of seven nations and three quasi-independent city-states. The author defines his regions, then gives a nice economic summary of what makes each of them different, and where their strengths and weaknesses are.
“The world’s biggest and most dynamic economy derives its strength and resilience from its geographic diversity. Economically, at least, America is not a single country. It is a collection of seven nations and three quasi-independent city-states, each with its own tastes, proclivities, resources and problems. These nations compete with one another – the Great Lakes loses factories to the Southeast, and talent flees the brutal winters and high taxes of the city-state New York for gentler climes – but, more important, they develop synergies, albeit unintentionally.”