Mount Vernon
- County:
- Skagit County
- County Seat:
- Yes
- Area (mi²):
- 12.298
- State:
- Washington
Mount Vernon is a city located in Skagit County, Washington. Mount Vernon has a 2026 population of 35,344. It is also the county seat of Skagit County. Mount Vernon is currently growing at a rate of 0.14% annually and its population has increased by 0.09% since the most recent census, which recorded a population of 35,312 in 2020.