Steilacoom is a city located in Washington. With a 2020 population of 6,434, it is the 115th largest city in Washington and the 4150th largest city in the United States. Steilacoom is currently growing at a rate of 0.34% annually and its population has increased by 7.50% since the most recent census, which recorded a population of 5,985 in 2010. Steilacoom reached it's highest population of 6,434 in 2021. Spanning over 2 miles, Steilacoom has a population density of 3,199 people per square mile.
The average household income in Steilacoom is $103,006 with a poverty rate of 7.57%. The median rental costs in recent years comes to $1,152 per month, and the median house value is $361,300. The median age in Steilacoom is 42 years, 39.1 years for males, and 44.4 years for females. For every 100 females there are 92.8 males.