Ruston
- County:
- Pierce County
- County Seat:
- No
- Area (mi²):
- 0.256
- State:
- Washington
Ruston is a city located in Pierce County, Washington. Ruston has a 2026 population of 1,048. Ruston is currently growing at a rate of 1.35% annually but its population has decreased by -0.66% since the most recent census, which recorded a population of 1,055 in 2020.