Quoted: In a pattern that is part education, part family background, college graduates tend to have longer life expectancies, higher household incomes, lower divorce rates and fewer single-parent families than those with less education, and cities where they cluster tend to exhibit those patterns more strongly. Montgomery County, where Dayton is located, has a premature death rate that is more than double that of Fairfax County, Va., the highly educated Washington suburb, according to Bridget Catlin, a University of Wisconsin researcher.