Tumwater is a city located in Washington. With a 2020 population of 24,852, it is the 46th largest city in Washington and the 1541st largest city in the United States. Tumwater is currently growing at a rate of 2.40% annually and its population has increased by 43.07% since the most recent census, which recorded a population of 17,371 in 2010. Spanning over 18 miles, Tumwater has a population density of 1,426 people per square mile.
The average household income in Tumwater is $77,913 with a poverty rate of 9.65%. The median rental costs in recent years comes to $1,150 per month, and the median house value is $261,400. The median age in Tumwater is 36.7 years, 35.4 years for males, and 38.3 years for females. For every 100 females there are 88.1 males.