Skip to main content How many people are vaccinated in your King County ZIP code? Here are the top, bottom 10 Sign In FacebookTwitterEmail Female Giving certificate of covid-19 vaccination on border controlDavid Espejo/Getty Images On Mercer Island and in areas of Sammamish, people can expect the vast majority of those they see are vaccinated — close to 90% of people 16 and older in the 98075 and 98040 ZIP codes have received at least one dose of the COVID-19 vaccine. But in areas of the Industrial District and Pacific, that number is significantly lower. Less than 50% of people in the 98134 and 98047 ZIP codes have had a dose of the vaccine.