
Steilacoom
- County:
- Pierce County
- County Seat:
- No
- Area (mi²):
- 2.011
- State:
- Washington
Steilacoom is a town located in Pierce County, Washington. Steilacoom has a 2025 population of 6,524. Steilacoom is currently declining at a rate of -0.65% annually and its population has decreased by -3.19% since the most recent census, which recorded a population of 6,739 in 2020.
The average household income in Steilacoom is $121,729 with a poverty rate of 11%. The median age in Steilacoom is 40.3 years: 39.9 years for males, and 40.5 years for females.