Supreme Court Composition

In light of recent events surrounding the Supreme Court of the United States I've noticed a perplexing situation.  Seven of the nine justices, including the Chief Justice, are from states east of the Delaware River, the boundary between Pennsylvania and New Jersey.  Of the other two, Kennedy is from California, the land of fruitcakes.  The other one, Thomas (the black guy), is from (God forbid) that lowly Southern state, Georgia (tongue-in-cheek).

In order of seniority the current justices are:

Scalia - New York
Kennedy - California
Thomas - Georgia
Ginsburg - New York
Breyer - Massachusetts
Roberts - New York (Chief Justice appointed by George W. Bush)
Alito - New Jersey
Sotomayor - New York
Kagan - New York

Is it just me, or do you also see a heavy bias toward northeastern types with a northeastern mentality?  What about the rest of the country, especially mid-America?  Are there no qualified people in Ohio, Iowa, Missouri, Oklahoma, Texas, Louisiana, etc.?  I think there should be some means to get a more equitable distribution of legal minds (or perhaps non-legal minds would be better) to serve on the Supreme Court of the Land.