| Official Name: | Río |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.1856°N -65.7507°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Naguabo |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 7.90 |
| Area Land Sq Mi: | 5.04 |
| Area Water Sq Mi: | 2.86 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 5350 |
| Population Density Sq Mi: | 1061.5 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 3 |
| Postal Code Type: | ZIP Code |
Río is a barrio in the municipality of Naguabo, Puerto Rico. Its population in 2010 was 5,350.[2] [3] [4]
Río 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 combined population of Río and Santiago y Lima barrios was 902.[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 barrio:[10]
Spanish; Castilian: Extensión Diplo, Extensión Diplo III, Residencial Torres del Río, Residencial Villa del Río, Row House, Sector Brazo Seco, Urbanización Brisas del Valle, Urbanización Ciudad Dorada, Urbanización Jardines de la Esperanza, Urbanización Praderas del Este, Urbanización Ramón Rivero, Urbanización Tropical Beach, and Spanish; Castilian: Urbanización Vistas de Naguabo.