Tijuana is found on the Gold Coast of Baja California, and is the municipal seat and the cultural and industrial 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 firms. In the early 21st century, Tijuana became the medical–gadget 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 recognized for Tijuana escorts. Far more than fifty million individuals cross the border amongst these two cities each yr. This metropolitan crossing can make the San Ysidro Port of Entry the fourth busiest land-border crossing in the globe. It is estimated that the two border crossing stations amongst the cities proper of San Diego and Tijuana account for 300,000 daily border crossings alone.
Tijuana is the 45th biggest city in the Americas and is the westernmost city in Mexico. According to the 2015 census, the Tijuana metropolitan region was the fifth-biggest in Mexico, with a population of one,840,710, but rankings fluctuate, the city (locality) itself was 6th biggest and the municipality (administrative) 3rd biggest nationally. The worldwide metropolitan region was estimated at about five,158,459 in 2016, making it the third-biggest metropolitan region in the former Californias region, 19th biggest metropolitan region in the Americas, and the biggest bi-nationwide conurbation that is shared amongst US and Mexico with elite latinas. Tijuana is getting to be more suburbanized like San Diego.