Sullivan is an unincorporated town in Sutter County. It is located near the west bank of the Feather River, northwest of Berg, north of Yuba City, northeast of Nuestro, east of Sanders, and southeast of Encinal and Lomo. Its elevation is 66 feet.
The native plant community of Sullivan is central oak woodland.
The U.S. Postal Service sometimes lists addresses in Sullivan as being in Live Oak, because they are both in the 95953 zip code. However, on the Yuba-Sutter Wiki, we prefer listing the more specific location Sullivan.