Newcastle is located in Washington. Newcastle, Washington has a population of 12,855. Newcastle is more family-centric than the surrounding county with 41.53% of the households containing married families with children. The county average for households married with children is 35.99%.
The median household income in Newcastle, Washington is $139,439. The median household income for the surrounding county is $106,326 compared to the national median of $69,021. The median age of people living in Newcastle is 37.7 years.
The average high temperature in July is 75.8 degrees, with an average low temperature in January of 36.1 degrees. The average rainfall is approximately 45.5 inches per year, with 5.7 inches of snow per year.
