Brownsville–Matamoros

International transborder agglomeration in southern Texas and northern Tamaulipas Transborder AgglomerationMatamoros–BrownsvilleTransborder AgglomerationInteractive Map of Lower Rio Grande Valley Brownsville–Harlingen–Raymondville, TX CSA Brownsville–Harlingen, TX MSA Raymondville, TX μSA McAllen–Edinburg, TX CSA McAllen–Edinburg–Mission, TX MSA Rio Grande City–Roma, TX μSA In Mexico Matamoros, TM ZM Reynosa, TM ZM CountriesUnited StatesMexicoStatesTexasTamaulipasPrincipal citiesMatamoros Brownsville - Harlingen - RaymondvillePopulation (2010 est.) • Metro1,136,995 (110th)Time zoneUTC-6 (CST) • Summer (DST)UTC-5 (CDT) Matamoros–Brownsville, also known as Brownsville–Matamoros, is one of the six transborder agglomerations along the Mexico–United States border. It is part of the Lower Rio Grande Valley region. The city of Matamoros is situated in the Mexican state of Tamaulipas, on the south bank of the Rio Grande, while the city of Brownsville is located in the U.S. state of Texas, directly north across the bank of the Rio Grande. The Matamoros–Brownsville area is connected by four international bridges. In addition, this transnational conurbation area