(a) The District Office is in Alameda, California.

(b) The Eleventh Coast Guard District is comprised of: Arizona; Utah; Nevada; California; and the ocean area bounded by a line from the California-Oregon state line westerly to 40° N. latitude, 150° W. longitude; thence southeasterly to 5° S. latitude, 110° W. longitude; thence northeasterly to the border between Guatemala and Mexico on the Pacific Coast (14°38′ N. latitude, 92°19′ W. longitude).

Sector Los Angeles-Long Beach's (LA-LB) office is located in San Pedro, CA. The boundaries of Sector LA-LB's Marine Inspection Zone and Captain of the Port Zone start at a point near the intersection of Monterey County and San Luis Obispo County and the California coast at latitude 35°47′43″ N, longitude 121°20′51″ W, proceeding southwest to the outermost extent of the EEZ at latitude 34°05′05″ N, longitude 124°56′43″ W; thence south along the outermost extent of the EEZ to latitude 32°01′17″ N, longitude 123°37′22″ W; thence northeast to the intersection of Orange County and San Diego County and the California coast at latitude 33°23′12″ N, longitude 117°35′45″ W; thence including all of Orange County, Riverside County, Ventura County, Los Angeles County, San Bernardino County, Santa Barbara County, Kern County, and San Luis Obispo County in California.

Sector San Diego's office is located in San Diego, CA. The boundaries of Sector San Diego's Marine Inspection Zone and Captain of the Port Zone start at a point near the intersection of Orange County and San Diego County and the coast at latitude 33°23′12″ N, longitude 117°35′45″ W, proceeding southwest to the outermost extent of the EEZ at latitude 32°01′17″ N, longitude 123°37′22″ W; thence south along the outermost extent of the EEZ to the intersection of the maritime boundary with Mexico at latitude 30°32′31″ N, longitude 121°51′58″ W; thence east along the maritime boundary with Mexico to its intersection with the California coast at latitude 32°32′03″ N, longitude 117°07′29″ W; thence including Imperial County and San Diego County in California; all of Arizona; Washington, Kane, San Juan, and Garfield Counties in Utah; and Clark County in Nevada.

The Sector San Francisco office is located in San Francisco, CA. The boundaries of Sector San Francisco's San Francisco Bay Marine Inspection and Captain of the Port Zones comprise the land masses and waters of Wyoming within the boundaries of Sweetwater County; Utah, except for Washington, Kane, San Juan, and Garfield Counties; Nevada, except for Clark County; and California, north of San Luis Obispo, Kern, and San Bernardino Counties. It also includes all ocean waters and islands contained therein of the EEZ bounded on the north by the northern boundary of the Eleventh Coast Guard District, which is described in § 3.55-1; and on the south by a line bearing 240 °T from the intersection of the Monterey-San Luis Obispo Count lines (approximately 35°47.5′00″ N latitude) and the California coast to the outermost extent of the EEZ; and on the west by the outermost extent of the EEZ.

The Sector Humboldt Bay office is located in McKinleyville, CA. The boundaries of Sector Humboldt Bay's Search and Rescue Mission Coordinator Zone start in the north by a line bearing 264T from the coastal point of the Oregon-California border (42°00.0′ N./124°13.0′ W.), on the south by a line bearing 270T from the coastal point of the Mendecino-Sonoma County, CA, border (38°47.0′ N./123°30.0′ W.), and on the west by the outermost extent of the exclusive economic zone (EEZ). The inland Area of Responsibility (AOR) includes the entirety of the following California counties: Del Norte, Humboldt, Mendecino, Siskiyou, Trinity, Shasta, Tehama, Glenn, Lake, Colusa, Butte, Plumas, Lassen, and Modoc.