Winlock
- County:
- Lewis County
- County Seat:
- No
- Area (mi²):
- 3.381
- State:
- Washington
Winlock is a city located in Lewis County, Washington. Winlock has a 2026 population of 2,515. Winlock is currently growing at a rate of 9.11% annually and its population has increased by 37.13% since the most recent census, which recorded a population of 1,834 in 2020.