Tijuana is found on the Gold Coast of Baja California, and is the municipal seat and the cultural and commercial center of Tijuana Municipality (Mexican states are divided into municipalities, rather than counties as in the U.S.). Tijuana covers 70% of the territory of the municipality and includes 80% of its population. A dominant manufacturing center of the North American continent, the city maintains services of many multinational conglomerate companies. In the early 21st century, Tijuana grew to become the healthcare–device manufacturing capital of North America. Tijuana is also a increasing cultural center and has been acknowledged as an critical new cultural mecca. The city is the most visited border city in the globe sharing a border of about 24 km (15 mi) with its sister city San Diego, and is known for Tijuana escorts. More than fifty million individuals cross the border between these two cities each and every 12 months. This metropolitan crossing can make the San Ysidro Port of Entry the fourth busiest land-border crossing in the planet. It is estimated that the two border crossing stations between the cities appropriate of San Diego and Tijuana account for 300,000 daily border crossings alone.
Tijuana is the 45th greatest city in the Americas and is the westernmost city in Mexico. According to the 2015 census, the Tijuana metropolitan area was the fifth-greatest in Mexico, with a population of one,840,710, but rankings differ, the city (locality) itself was 6th greatest and the municipality (administrative) 3rd greatest nationally. The international metropolitan region was estimated at about 5,158,459 in 2016, creating it the third-greatest metropolitan area in the former Californias region, 19th greatest metropolitan area in the Americas, and the greatest bi-national conurbation that is shared between US and Mexico with elite latinas. Tijuana is becoming more suburbanized like San Diego.