Río Prieto, Lares, Puerto Rico

Río Prieto is a barrio in the municipality of Lares, Puerto Rico. Its population in 2010 was 567.

History
Río Prieto was in Spain's gazetteers until Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of Río Prieto barrio was 1,931.

Sectors
Barrios (which are, in contemporary times, roughly comparable to minor civil divisions) and subbarrios, in turn, are further subdivided into smaller local populated place areas/units called sectores (sectors in English). The types of sectores may vary, from normally sector to urbanización to reparto to barriada to residencial, among others.

The following sectors are in Río Prieto barrio:

Camino Ballester Camino Rullán, Cerro Malo, Sector Boquilla, Sector La Monserrate, Sector Los Márquez, Sector Vélez, Sector Vilella and Tramo Carretera 431.