Hog Island is an island in the wetlands of the Petaluma River in Sonoma County, California,[2] located at 38°09′33″N 122°32′18″W / 38.15917°N 122.53833°W / 38.15917; -122.53833[1] near the Marin County line.

San Antonio Creek enters the river just west of this island.

[3] It is mentioned in a newspaper article from 1914.

[4] There are two other islands with the same name in the Bay area: Hog Island, in Tomales Bay in Marin County, and Hog Island in the Sacramento–San Joaquin River Delta in San Joaquin County.

This geographical article related to Sonoma County, California is a stub.