Watseco is an unincorporated community in Tillamook County, Oregon, United States.

The three communities are all along a 3-mile (5 km) stretch of U.S. Route 101 between the cities of Rockaway Beach and Garibaldi.

[2] According to Oregon Geographic Names, brothers George and Robert Watt bought 360 acres (150 ha) of beachfront land here in the early 20th century.

The name of the community and flag stop is a combination of "Watt" and "Sea Coast", assigned in 1916.

This Tillamook County, Oregon state location article is a stub.