How long is the border between the United States and Mexico?

The US-Mexico border refers to the border between Mexico and Texas, New Mexico, Arizona and California, starting from San Diego and Tijuana in the west and brownsville and matamoros in the east.

The border between the two countries is 3 169 kilometers long, with the Rio Grande as the boundary in the east, the Sonoran Desert and the Chihuahua Desert in the middle, and the metropolitan areas of Santiago and Tijuana and even the Pacific coast in the west. The scenery is changeable, ranging from a bustling metropolis to an endless desert.

The current US-Mexico border was established after the 1848 US-Mexico War, and it is the busiest border in the world at present. Every year, about 2.5 million people legally cross the border between the two countries, and a large number of illegal immigrants and serious drug crimes flood into the United States, which has become an important issue in US-Mexico relations.