Matamoros–Brownsville, also known as
Brownsville–Matamoros, or simply as the
Borderplex, is one of the six bi-national metropolitan areas along the Mexico–U.S border. The city of
Matamoros is situated on the Mexican state of
Tamaulipas, on the southern bank of the
Rio Grande, while the city of
Brownsville is located in the American state of
Texas, directly north across the bank of the Rio Grande. The Matamoros–Brownsville is connected by four international bridges. In addition, this transnational
conurbation area has a population of 1,136,995, making it the 4th largest metropolitan area in the Mexico-US border.