| Official Name: | Caonillas Abajo |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.1018°N -66.4461°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Villalba |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 6.36 |
| Area Land Sq Mi: | 5.93 |
| Area Water Sq Mi: | 0.43 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 1448 |
| Population Density Sq Mi: | 244.6 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 663 |
| Postal Code Type: | ZIP Code |
Caonillas Abajo is a barrio in the municipality of Villalba, Puerto Rico. Its population in 2010 was 1448.[2] [3] [4]
Caonillas Abajo 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 Caonillas Abajo barrio was 1,558.[6]
Barrios (which are 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 Caonillas Abajo barrio:[10]
Spanish; Castilian: [[Puerto Rico Highway 150|Carretera 150]], Hoyito Santiago, Sector Cerro Gordo, (Cubones Sur, Los Chivos, La Escuela, La Línea, Los Velázquez, El Hoyito Pérez, El Negocio Toño, La Capilla) Sector El Higuero (El Rincón, Lajitas, Villalba, Los Fondos, Palmasola, La Escuela, Las Minas, La Cruz, La Capilla), and Spanish; Castilian: Sector La Vega, (Los Laboy, Los Cruz, Caonillas Final).