About 98303 - Anderson Island, Washington
Located in Washington, the United States is home to the mid-sized community of Anderson Island, served by ZIP code 98303. It sits within Anderson Island County County.
Around 38,633 people live in the 98303 ZIP code area. That's noticeably above the average for a Washington ZIP code, which sits near 21,959 people.
Median household income is about $93,900 (near the Washington average).
Nearby communities in Washington include Tacoma, Milton, Seattle.