Mesa
- County:
- Franklin County
- County Seat:
- No
- Area (mi²):
- 1.657
- State:
- Washington
Mesa is a city located in Franklin County, Washington. Mesa has a 2026 population of 388. Mesa is currently growing at a rate of 1.57% annually and its population has increased by 0.52% since the most recent census, which recorded a population of 386 in 2020.