Sleepy Hollow is a census-designated place in Marin County, California. It is located 7 miles (11 km) south of downtown Novato, at an elevation of 177 feet (54 m). Its population as of the 2010 census is 2,384.
Sleepy Hollow is located near San Anselmo, California, located outside the northern town limits. The Terra Linda district of San Rafael lies to the east. Though no roads directly connect Sleepy Hollow with Terra Linda, hiking trails do.
Butterfield Road, Sleepy Hollow's main street, is accessed from Sir Francis Drake Boulevard, a major east-west road in Marin County.
Lucas Valley-Marinwood lies to the north of Sleepy Hollow, but there are no roads directly connecting the two unincorporated communities.