Brewster
- County:
- Okanogan County
- County Seat:
- No
- Area (mi²):
- 1.152
- State:
- Washington
Brewster is a city located in Okanogan County, Washington. Brewster has a 2026 population of 2,090. Brewster is currently growing at a rate of 2.05% annually and its population has increased by 5.18% since the most recent census, which recorded a population of 1,987 in 2020.