
Longbranch
- County:
- Pierce County
- County Seat:
- No
- Area (mi²):
- 20.03
- State:
- Washington
Longbranch is a CDP located in Pierce County, Washington. Longbranch has a 2025 population of 4,155. Longbranch is currently growing at a rate of 0.61% annually but its population has decreased by -9.04% since the most recent census, which recorded a population of 4,568 in 2020.
The average household income in Longbranch is $125,241 with a poverty rate of 18.41%. The median age in Longbranch is 50.9 years: 52.3 years for males, and 48.1 years for females.