Martha Lake is a city located in Washington. Martha Lake has a 2020 population of 19,954. Martha Lake is currently declining at a rate of 0.00% annually and its population has increased by 28.96% since the most recent census, which recorded a population of 15,473 in 2010. Martha Lake reached it's highest population of 19,954 in 2018.
The average household income in Martha Lake is $107,394 with a poverty rate of 7.45%. The median rental costs in recent years comes to $1,566 per month, and the median house value is $420,300. The median age in Martha Lake is 34.5 years, 33.8 years for males, and 35.5 years for females. For every 100 females there are 100.7 males.