Staten Island is an island in the Sacramento-San Joaquin River Delta, in San Joaquin County, California, twenty-five kilometres northwest of . The 3,700 ha (9,100 acres) is bordered on the east and south by South Mokelumne River, and on the west and north by North Mokelumne River.
Coordinates: 38°09′52″N 121°30′59″W / 38.164362°N 121.516342°W