Of the 50 wealthiest ZIP codes on The List, 39 are local to King County, which is 78 percent of The List. A total of 11 wealthiest ZIP codes on The List are in the city of Seattle. Information was ...
Wealthiest ZIP codes in King, Pierce and Snohomish counties as determined by ESRI's proprietary formula The PSBJ worked with a GIS mapping service to determine which ...
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