Reynosa is a border city in the northern part of Tamaulipas, Mexico. It is located on the southern bank of the Rio Grande, directly across the border from Hidalgo, Texas, in the United States. As of 2013, the city of Reynosa has a population of 672,183. If the floating population is included in the census count, the population can reach up to approximately 1,000,000.Reynosa is the largest and most populous city in the state of Tamaulipas, followed by Matamoros, Nuevo Laredo, Ciudad Victoria, Tampico, and Río Bravo. In addition, the international Reynosa–McAllen Metropolitan Area counts with a population of 1,500,000 inhabitants, making it the third largest metropolitan area in the Mexico–U.S. border after San Diego–Tijuana and El Paso–Juárez. Reynosa is the 30th largest city in Mexico and anchors the largest metropolitan area in Tamaulipas.In 2011, Reynosa was the fastest growing city in the state of Tamaulipas, and was among the top five fastest growing cities in Mexico.HistoryReynosa was founded on 14 March 1749 with 297 inhabitants by Carlos Cantú under the command of José de Escandón y Helguera the Count of Sierra Gorda. But due to flooding in the area on the 4 July 1802, they decided to move five miles to the east keeping the same margin between them and the Rio Grande. It was not until 1926 that the state government recognized Reynosa as a city.