San Ysidro is the archaic spelling of San Isidro in Spanish. It is named after Saint Isidore the Laborer, an 11th-12th century Spanish saint.
After independence from Spain in 1822, the Mexican go… See more

San Ysidro is home to the fourth busiest land border crossing in the world. It is the second-busiest border crossing between two sovereign nations (after the Johor–Singapore Causeway) and the busiest bor… See more

The 2010 census counted 28,008 people in San Ysidro, of whom 93% were Hispanic.
Of those over 5 years old, 60% spoke Spanish and English "well" or "very well". 13% only spoke Spanish, and 10% spoke only English. … See more