Newcastle is an Eastside city in King County, Washington, United States. The population was 10,380 at the 2010 census and an estimated 12,292 in 2019.
Although Newcastle was not incorporated until 1994, it has been an important settlement and town since the late 19th century and played a major role in the development of Seattle and the surrounding region.
New Castle Beach Park
Newcastle Beach Park, the largest beach park in Bellevue, creates opportunities for features swimming, sunbathing, and a nature trail. A 300-foot dock, colorful children’s play area, and convenient picnic facilities make it a popular family destination. There are 3 picnic areas that are able to be reserved. 1 includes a shelter and a BBQ. Disabled parking is available.