The 553-acre (224 ha) Thomas Lake area in the northeastern corner of the city, bordered to the north by 132nd Street and east by Seattle Hill Road, was annexed in 2005 and added 2,200 residents to the city’s population.- Vashon, Washington (Wikipedia)
Vashon is a census-designated place (CDP) in King County, Washington, United States. It covers an island alternately called Vashon Island or Vashon–Maury Island, the largest island in Puget Sound south of Admiralty Inlet. The population was 10,624 at the 2010 census and the size is 36.9 square miles (95.6 km2).