Tijuana is located on the Gold Coast of Baja California, and is the municipal seat and the cultural and business 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 is made up of 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 became the medical–device manufacturing capital of North America. Tijuana is also a increasing cultural center and has been recognized as an important 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 identified for Tijuana escorts. Far more than fifty million people cross the border between these two cities each yr. This metropolitan crossing helps make the San Ysidro Port of Entry the fourth busiest land-border crossing in the world. It is estimated that the two border crossing stations between the cities correct of San Diego and Tijuana account for 300,000 everyday 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 region was the fifth-greatest in Mexico, with a population of 1,840,710, but rankings vary, the city (locality) itself was 6th greatest and the municipality (administrative) 3rd greatest nationally. The worldwide metropolitan area was estimated at about five,158,459 in 2016, generating it the third-greatest metropolitan region in the former Californias area, 19th greatest metropolitan region in the Americas, and the greatest bi-national conurbation that is shared between US and Mexico with elite latinas. Tijuana is becoming much more suburbanized like San Diego.