9. 76092 - Southlake, TX
Everything's bigger in Texas. This is certainly true for homes, incomes and swimming pools in Southlake. Southlake is north of Fort Worth and Dallas and gets its name from Grapevine Lake. The lake's waters offer refuge from this sprawling, desert suburb. In terms of median income, Southlake is one of the highest earning in the nation.
[Photo via @saladcrouton]