Sammamish is a city located in King County Washington. With a 2020 population of 66,686, it is the 19th largest city in Washington and the 570th largest city in the United States . Sammamish is currently growing at a rate of 0.60% annually and its population has increased by 45.67% since the most recent census, which recorded a population of 45,780 in 2010. Sammamish reached it's highest population of 66,686 in 2021. Spanning over 24 miles, Sammamish has a population density of 3,264 people per square mile.
The average household income in Sammamish is $210,573 with a poverty rate of 2.40%. The median rental costs in recent years comes to $2,395 per month, and the median house value is $830,000. The median age in Sammamish is 38.7 years, 39 years for males, and 38.3 years for females.