San Ysidro, CA

92173 is a ZIP code located in south San Diego, California, near the Mexican border. This area is home to the San Ysidro Port of Entry, the busiest land border crossing in the Western Hemisphere. Other notable landmarks in 92173 include the Las Americas Premium Outlets, offering a variety of shopping options, and the Tijuana River Estuary, a protected wetland area popular among birdwatchers and nature enthusiasts.