Tijuana: The Border Metropolis of Northwest Mexico

Answer: Tijuana, Baja California

Tijuana is the dominant city of Mexico's northwest corner — directly south of San Diego, forming the **San Diego–Tijuana transborder agglomeration** (pop. ~5.5M), one of the world's largest cross-border metro areas.

Key Facts

• State: Baja California (Norte).
• Population: 1.9M (city), 2.2M (metro, 2020).
• Border Crossings: San Ysidro (world's busiest land crossing, 50M+/yr), Otay Mesa, Cross Border Xpress (CBX — airport bridge).
• Economy: Maquiladoras (manufacturing), medical tourism, craft beer, gastronomy, nightlife, cultural festivals.
• Not a "Resort City" per se — though nearby **Rosarito Beach** (20 min south) and **Ensenada** (90 min) are classic beach destinations. Tijuana is urban, gritty, vibrant, binational.

Why the Confusion?

Queries often conflate "Baja California resort city" with **Cabo San Lucas / San José del Cabo** (Baja California *Sur*, tip of peninsula) or **Ensenada** (wine country/coast). Tijuana is the **major city**; the others are **resort towns**.