Oceanside is a census-designated place (CDP) and unincorporated community in Tillamook County, Oregon, United States.[5] The population was 361 at the 2010 census. Oregon Route 131's northern terminus is in the community, which is just north of Netarts. Symons State Park is in Oceanside, while Three Arch Rocks National Wildlife Refuge lies just offshore.

There were 193 households, out of which 5.2% had children under the age of 18 living with them, 48.7% were married couples living together, 2.1% had a female householder with no husband present, and 48.2% were non-families. 41.5% of all households were made up of individuals, and 14.0% had someone living alone who was 65 years of age or older. The average household size was 1.69 and the average family size was 2.20.