Bayocean was a community in Tillamook County, Oregon, United States. Sometimes known as "the town that fell into the sea", it was a planned resort community founded in 1906 on Tillamook Spit, a small stretch of land that forms one wall of Tillamook Bay.

Tillamook County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 27,390. The county seat is Tillamook. The county is named for the Tillamook or Killamook people, a Native American tribe who were living in the area in the early 19th century at the time of European American settlement. The county is located within Northwest Oregon.