Blaine
- County:
- Whatcom County
- County Seat:
- No
- Area (mi²):
- 5.586
- State:
- Washington
Blaine is a city located in Whatcom County, Washington. Blaine has a 2026 population of 6,371. Blaine is currently growing at a rate of 2.96% annually and its population has increased by 7.96% since the most recent census, which recorded a population of 5,901 in 2020.