| Official Name: | Río Blanco |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.2517°N -65.7906°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Naguabo |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 17.10 |
| Area Land Sq Mi: | 17.09 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 3412 |
| Population Density Sq Mi: | 199.6 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 797 |
| Postal Code Type: | ZIP Code |
Río Blanco is a barrio in the municipality of Naguabo, Puerto Rico. Its population in 2010 was 3,412.[2] [3] [4]
Río Blanco was in Spain's gazetteers[5] 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 Blanco Abajo barrio was 976 and Río Blanco Arriba barrio was 959.[6]
Barrios (which are, in contemporary times, roughly comparable to minor civil divisions)[7] 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.[8] [9]
The following sectors are in Río Blanco barrio:[10]
Spanish; Castilian: Finca San Eladio, Parcelas Río Blanco, Parcelas Sector Común, Sector Camino Viejo, Sector Común, Sector Cubuy, Sector El Fuego, Sector El Puente, Sector Florida, Sector La Cuchilla, Sector La Joba, Sector La Mina, Sector Río Blanco Arriba, Urbanización Río Blanco Heights, and Spanish; Castilian: Urbanización Vistas de Río Blanco.