Rio Piedras

Río Piedras is a former municipality of Puerto Rico, which was consolidated with the capital municipality of San Juan, Puerto Rico in 1951. It was founded in 1714, and has been the home of the University of Puerto Rico's main campus since 1903, earning the popular name of Ciudad Universitaria (University City).

Río Piedras' origins go back to 1714 when a settlement along the shores of the Piedras river was recognized by Governor Juan de Rivera. Originally known as El Roble, it eventually adopted the name of the river that crossed its territory (Río Piedras in Spanish).

During the nineteenth century, most of its territory was used for agricultural and livestock-raising purposes. Sugar cane, cotton and coffee were some of the goods produced during this era at the municipality.

On May 12, 1903, the University of Puerto Rico was founded in Río Piedras. The university was a central part of the development of Rio Piedras, both in housing and economically. Even though the campus covers a very small portion of the territory, it is considered the unofficial symbol of the old town. The Río Piedras Campus is recognized as the main campus in the University of Puerto Rico system. The Botanical Gardens of the university are also located at Río Piedras.

The municipality became part of the capital city of San Juan on July 1, 1951, after the approval of Project 177 of the House of Representatives of Puerto Rico. Following the annexation of Rio Piedras, the city of San Juan, and its surrounding area now including Rio Piedras, quadrupled its former size. The last mayor of the municipality of Río Piedras was Ángeles Méndez de López Corver.

The flag of Río Piedras consists of a yellow cloth with a wavy blue stripe. The stripe has small white stones crossing it, and symbolizes the river that gave its name to the former town. The yellow background represents the sun, progress, and the future.

The region is mostly flat due to its location in the Northern Coastal Plains of the island. The highest regions are located at the south, mainly in the Caimito and Cupey barrios. The Río Piedras (or Piedras River) which gives name to the area crosses the region.

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