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 are the wealthiest areas in ...

The Puget Sound region's wealthiest ZIP codes have an average disposable income of about $100,000 or more, a median home value of about $500,000 or more, and a net worth of about $1 million or more.