. . "San Nicolas Island is the most remote of California's Channel Islands. It is part of Ventura County. The 14,562 acre (58.93 km\u00B2 or 22.753 sq mi) island is currently controlled by the United States Navy and is used as a weapons testing and training facility, served by Naval Outlying Field San Nicolas Island. The uninhabited island is defined by the United States Census Bureau as Block Group 9, Census Tract 36.04 of Ventura County, California."@en .