The higher salaries tend to be in the expensive cities, i.e. New York City and Boston have the highest resident salaries I've heard about, $42K-50K starting. Interestingly, San Francisco has very mediocre salaries (~$36k) despite being just about the most expensive city in the US.
However, before getting jealous, by the "Cost of Living" calculator I found on the web somewhere, my Boston $42k is equal to $28k in my old home in Gainesville, FL. Don't underestimate your lifestyle as a resident!