At No. 5, 98053—which includes Union Hill, Trilogy, Ames Lake and other unincorporated neighborhoods—has an average net worth of $545,677, according to the PSBJ. The top four wealthiest ZIP codes in the area are, respectively, 98039 (Medina), 98075 (Sammamish), 98040 (Mercer Island) and 98074 (Sammamish).
The same ZIP codes formed last year's top five, with Redmond's 98053 coming in fourth place.
Click here for PSBJ's 2012 list.