
Pierce County
- State:
- Washington
- County Seat:
- Tacoma
Pierce County's estimated 2025 population is 933,130 with a growth rate of 0.24% in the past year according to the most recent United States census data. Pierce County is the 2nd largest county in Washington. The 2010 population was 795,402 and has seen a growth of 17.32% since that time.