California is a state in the Western United States. It is bordered by Nevada to the east, Arizona to the southeast, the Pacific Ocean to the west, Oregon to the north, and the Mexican state of Baja California to the south.
The fence separates San Diego, California from Tijuana, Mexico (top). The border spans almost 2,000 miles from the Gulf of Mexico to the Pacific Ocean and is fenced for some 700 miles of its total length. Much of the San Diego sector is double-fenced.
California is the third largest state in the United States, bounded by the Pacific Ocean in the west and bordered by Oregon, Nevada, and Arizona; it shares a border with Mexico in the south. The United States acquired the area from Mexico in 1848, with generally the same boundary as California today.
California's seven ports of entry are San Ysidro, Otay Mesa, CBX, Tecate, Calexico West, Calexico East and Andrade. Copyright 2025 Nexstar Media Inc. All rights reserved.
About California ports of entry There are 7.4 million annual northbound border crossings via commercial truck, of which 1.6 million (21.2%) pass through ports of entry on the California-Mexico border.
California is bordered by Oregon to the north, Arizona to the southeast, and Nevada to the northeast and east. The country also shares an international border with Baja California of Mexico to the south. The state has a coastline on the Pacific Ocean to the west.
The state of California is located on the west coast of the United States of America. California is bordered to the north by the state of Oregon and to the east by the states of Nevada and Arizona. California shares its southern boundary with the country of Mexico. To the west lies the Pacific Ocean.
San Diego–Tijuana is an international transborder agglomeration, straddling the border of the adjacent North American coastal cities of San Diego, California, United States, and Tijuana, Baja California, Mexico.
California's Border Protection Stations (BPS) are the first line of defense in our pest exclusion efforts. At these stations, vehicles are inspected for commodities infested with invasive species. California established its first agricultural inspection stations in the early 1920s.
Staff at the border protection stations inspect private and commercial vehicles entering the state, determining if the produce on board meets the state's regulations. Staffers also search for pests and diseases that may be hitching a ride on fruits, vegetables or other plants.