Preston is an unincorporated community in Sonoma County, California, United States.

Revenue from Preston's ministry and the settlement of followers in the area led to the construction of a church, railroad depot, post office, and a commercial district on both sides of the Russian River.

[3] The community began a slow decline after Preston's death in 1909, continuing to hold services into the 1940s.

[3] Prior to the wildfire of 1988, residents of Preston reported multiple sightings of a sea-serpent like creature in the rapids of the Russian River.

Theorists have posited that the "Preston Parasite" could be explained and debunked by an overgrown Sacramento pikeminnow, a North American river otter, or a harbor seal, all of which can be found in the Russian River.