Warrenton
- County:
- Clatsop County
- County Seat:
- No
- Area (mi²):
- 12.662
- State:
- Oregon
Warrenton is a city located in Clatsop County, Oregon. Warrenton has a 2026 population of 6,324. Warrenton is currently growing at a rate of 1.09% annually and its population has increased by 0.6% since the most recent census, which recorded a population of 6,286 in 2020.