San Diego–Tijuana

San Diego-TijuanaSan Diego-Tijuana metropolitan areaTijuana-San DiegoSan Diego–Tijuana metropolitan areaareaSD-TJinternational metropolitan areaSan Diego – Tijuana metropolitan areaborder communitiesbroadcasting in the San Diego/Tijuana metropolitan area
San Diego–Tijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico.wikipedia
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Tijuana

Tijuana, MexicoTijuana, Baja CaliforniaTijuana, Baja California, Mexico
San Diego–Tijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico. These included Interstate 805, connecting Tijuana to Del Mar.
It is part of the San Diego–Tijuana transborder urban agglomeration and the larger Southern California megalopolis.

San Diego County, California

San Diego CountySan DiegoSan Diego metropolitan area
In its entirety, the region consists of San Diego County in the United States and the municipalities of Tijuana, Rosarito Beach, and Tecate in Mexico.
San Diego is also part of the San Diego–Tijuana metropolitan area, the largest metropolitan area shared between the United States and Mexico.

Conurbation

conurbatedmergedMetroplex
San Diego–Tijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico.
The largest conurbation between the United States and Mexico, San Diego–Tijuana includes the two countries' busiest border crossing and a shared economy.

List of urban areas by population

List of urban agglomerations by population24thone of the 50 largest urban areas in the world
The urban area of San Diego–Tijuana is the 72nd largest in the world and 11th largest in North America, with a population of 5,330,000.
Thus, Detroit–Windsor in both the United States and Canada, and San Diego–Tijuana in both the United States and Mexico are not treated as single urban areas.

Transborder agglomeration

bi-national conurbationinternational metropolitan areatransborder
The 2012 population of the region was 4,922,723, making it the largest bi-national conurbation shared between the United States and Mexico, the second-largest shared between the US and another country (after Detroit–Windsor), and the fourth largest in the world.

Baja Mar

Bajamar
While it is 90 and 74 mile from the cities of San Diego and Tijuana respectively, recent developments between the port city and Rosarito Beach including upscale, Americanized subdivisions and resorts such as Punta Azul, Baja Mar, and La Salina have greatly increased the urbanity of the corridor between Rosarito Beach and Ensenada.
Baja Mar (or Bajamar) is a seaside resort community twenty minutes north of Ensenada and forty minutes south of Greater San Diego–Tijuana in Ensenada Municipality, Baja California, Mexico.

Ensenada, Baja California

EnsenadaEnsenada, MexicoCity of Ensenada
The boundaries of the Kumeyaay lands once extended from the Pacific Ocean, south to Ensenada, Baja California, east into the Imperial Valley and north to Warner Springs.
The city is not part of any rail transport grid with which it could use to transport cargo and other materials, although there are plans to build a rail line to the United States border in the short to mid-term future that would link it to San Diego–Tijuana.

Imperial County, California

Imperial CountyImperialEl Centro Metropolitan Area
The region lies just south of Orange County and west of Imperial County, and shares borders with Greater Los Angeles.
Radiating to the east and west are connections to the Arizona Sun Corridor and San Diego-Tijuana metropolitan area via Interstate 8, Blythe, and northern San Diego County via State Route 78, the Mexicali Valley via State Route 111, and the Coachella Valley, Inland Empire, and Los Angeles metropolitan area via State Route 86.

Imperial Beach, California

Imperial BeachImperial Beach, CAImperial Beach Pier
It is also part of the San Diego – Tijuana metropolitan area, the largest bi-national metropolitan area shared between the United States and Mexico with over 5 million people.

Gold Coast (Baja California)

Gold CoastBaja California Gold CoastGold Coast of Baja California
The development between San Diego and the Baja California Gold Coast is so great that 300,000 visitors cross into Tijuana daily from Greater San Diego.
Tijuana's large tourism sector is also in part attributed to San Diego, with which it forms an international metropolitan area.

Southern California

southernSoCalCalifornia
The majority of cross-border trips into the United States are those made by commuters into the Greater San Diego area and Southern California as a whole.
The urban area is also host to an international metropolitan region in the form of San Diego–Tijuana, created by the urban area spilling over into Baja California.

Calexico–Mexicali

CalexicoMexicali - CalexicoMexicali–Calexico
The region has its eastern terminus in the Colorado Desert and Imperial Valley regions, where another conurbation – Mexicali–Calexico – is formed.
* San Diego–Tijuana

Rosarito Beach

RosaritoPlayas de RosaritoRosarito, Mexico
The Bay and its marinas are surrounded by more than fifteen hotels while historic buildings such as the Hotel del Coronado and Rosarito Beach Hotel lie on the Coronado Peninsula and Rosarito coast.
The city is the second largest in the Tijuana metropolitan area and southern beach city of the San Diego–Tijuana international metropolitan region.

San Diego

San Diego, CaliforniaSan Diego, CACity of San Diego
San Diego–Tijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico.
It is part of the San Diego–Tijuana conurbation, the second-largest transborder agglomeration between the U.S. and a bordering country after Detroit–Windsor, with a population of 4,922,723 people.

California State Route 125

SR 125State Route 125South Bay Expressway
State Route 52 connects communities in northern San Diego, State Route 905 connects the Otay Mesa Port of Entry with South Bay cities, State Route 125 connects South Bay with East County, State Route 94 connects South Bay with the Mountain Empire, and State Route 78 connects North County Coastal with North County Inland, as well as to the mountain communities of the San Diego County Peninsular Ranges.
State Route 125 (SR 125) is a state highway in the U.S. state of California that serves as a north–south freeway in the San Diego area.

Interstate 805

I-805Jacob Dekema FreewayAdams Avenue Bridge (San Diego)
These included Interstate 805, connecting Tijuana to Del Mar.
It is a bypass auxiliary route of I-5, running roughly through the center of the Greater San Diego region from San Ysidro (part of the city of San Diego) near the Mexico–U.S. border to near Del Mar.

North America

NorthNorth AmericanNA
San Diego–Tijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico. The urban area of San Diego–Tijuana is the 72nd largest in the world and 11th largest in North America, with a population of 5,330,000.
These urban agglomerations are observed at their largest and most productive in Detroit–Windsor and San Diego–Tijuana and experience large commercial, economic, and cultural activity.

Tecate

Tecate, Baja CaliforniaTecate, MexicoTecate, Baja California, Mexico
San Diego–Tijuana is linked to Ensenada by various ways as well; including Federal Highway 3, Federal Highway 1 and Federal Highway 1D, running from the border cities of Tijuana and Tecate to the Cinderella of the Pacific.
It is on the border with Tecate, California, United States and is part of the San Diego–Tijuana metropolitan area.

San Ysidro, San Diego

San YsidroSan Ysidro, CaliforniaSan Ysidro, San Diego, California
The urbanized area where San Diego and Tijuana meet is known as San Ysidro on the American side of the border and Colonia Federal/Colonia Libertad on the Mexican side.

Tecate Port of Entry

border crossingTecateTecate Border Crossing
And the farthest east, the Tecate Port of Entry is the smallest port of entry and is not designed for dealing with large volumes of traffic as it follows a long winding road through the Mountain Empire.
The Tecate Port of Entry is one three ports of entry in the San Diego–Tijuana metropolitan region.

Otay Mesa Port of Entry

Otay MesaOtay Mesa Border CrossingOtay Mesa, California
Further east, the Otay Mesa Port of Entry deals with high volumes of commercial traffic as it is located in the manufacturing zone of the region.
The Otay Mesa Port of Entry is one of three ports of entry (POE) in the San Diego–Tijuana metropolitan region, in the U.S. state of California, connecting Otay Mesa in the City of San Diego with the Otay Centenario borough of Tijuana.

Del Mar, California

Del MarDel Mar, CADel Mar Beach
These included Interstate 805, connecting Tijuana to Del Mar. This area contains nearly all of the area located in the cities of Carlsbad, Encinitas, Solana Beach, and Del Mar.

XETV-TDT

XETVXETV-TVXETV 6
Cooperative frequency coordination between both city regions is quite common; an example is XETV-TV 6, where the K being replaced by the X as an indicator that it is a Mexican-licensed station.
Its terrestrial signal also covers the San Diego, California area across the international border in the United States.

XHITZ-FM

XHITZXHIS-FM
On radio, relaying programming across the border is even more common, with stations like XHITZ-FM 90.3 and XHMORE-FM 98.9 being programmed by U.S. broadcast groups, while being owned by Mexican companies (as required under Mexican law) and operating under Mexican broadcast law.
XHITZ-FM (Z90.3) is a Top 40 (CHR) radio station in San Diego-Tijuana, broadcasting at 90.3 MHz.

San Ysidro Port of Entry

San YsidroSan Ysidro Border CrossingPedWest
San Ysidro/El Chaparral is the busiest border crossing in the world; in 2005 alone, 41,417,164 people entered the U.S. through this port.
The San Ysidro Port of Entry is one of three ports of entry in the San Diego–Tijuana metropolitan region.