Sudden Valley is a city located in Washington. Sudden Valley has a 2020 population of 7,999. Sudden Valley is currently declining at a rate of 0.00% annually and its population has increased by 24.19% since the most recent census, which recorded a population of 6,441 in 2010. Sudden Valley reached it's highest population of 7,999 in 2018.
The average household income in Sudden Valley is $89,130 with a poverty rate of 5.10%. The median rental costs in recent years comes to $1,794 per month, and the median house value is $280,900. The median age in Sudden Valley is 41.1 years, 40.9 years for males, and 41.5 years for females. For every 100 females there are 99.4 males.