Like all municipalities of Puerto Rico, Cidra is subdivided into administrative units called barrios, which are, in contemporary times, roughly comparable to minor civil divisions.
[1] The barrios and subbarrios,[2] 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.
[3][4][5][6][7] Source:[1] Although Rabanal officially consists of only one single barrio, it is traditionally subdivided into two areas or sub-barrios: Río Abajo was listed on the Special Communities in 2011 by the Puerto Rico Office for Socioeconomic and Community Development.
Note: * - Formerly part of Barrio Bayamón, officially constituted by Law 77 of 2009 Source: Cidra (Puerto Rico) - Wikipedia