Marietta-Alderwood is a city located in Washington. Marietta-Alderwood has a 2020 population of 3,708. Marietta-Alderwood is currently declining at a rate of 0.00% annually and its population has decreased by -5.07% since the most recent census, which recorded a population of 3,906 in 2010. Marietta-Alderwood reached it's highest population of 4,704 in 2015.
The average household income in Marietta-Alderwood is $59,438 with a poverty rate of 19.90%. The median rental costs in recent years comes to $1,018 per month, and the median house value is $333,700. The median age in Marietta-Alderwood is 42.8 years, 39.9 years for males, and 46.9 years for females. For every 100 females there are 88.8 males.