Newcastle is located in Washington. Newcastle, Washington has a population of 12,624. Newcastle is more family-centric than the surrounding county with 32% households with children. The county percentage for households with children is 26%.
The median household income in Newcastle, Washington is $140,289. The median household income for the surrounding county is $102,088 compared to the national median of $66,222. The median age of people living in Newcastle is 43.1 years.
The average high temperature in July is 76.87 degrees, with an average low temperature in January of 34.73 degrees. The annual precipitation is 38.79.