Rao Caaas Abajo is a barrio located in Mayagüez, on the western coast of Puerto Rico. The barrio spans approximately 9.24 square kilometers and sits within a region known for its mix of urban development and rural agricultural areas. Mayagüez itself is the second-largest city in Puerto Rico and a significant commercial and educational hub, so Rao Caaas Abajo benefits from proximity to municipal services and infrastructure while maintaining a more rural character than the densely populated city center.

The landscape of Rao Caaas Abajo reflects the broader geography of western Puerto Rico's coastal plains and transitional zones. The barrio is situated in an area with warm tropical climate and moderate rainfall typical of the island's leeward side. The terrain is generally flatter than the interior mountains but may include some topographic variation. Land in this barrio tends toward a mix of agricultural use and residential settlement patterns common to rural barrios in the Mayagüez municipality, with property parcels varying in size from smaller residential lots to larger tracts suited for farming or mixed-use development.

Property ownership in Rao Caaas Abajo, like all neighborhoods in Puerto Rico, is documented through the CRIM (Catastro, Registro e Información Multipropósito) system, which maintains the official cadastral records for all land parcels across the island. Anyone researching land or property in this barrio will find that ownership history, parcel boundaries, and transfer records are critical resources for understanding the real estate landscape. Propieda maintains access to CRIM cadastral and registry data for parcels in Rao Caaas Abajo, enabling property researchers to review official records for this barrio.

Mayagüez: Mayaguez, Puerto Rico's third-largest city, serves as the western region's commercial and educational center. The University of Puerto Rico campus drives academic activity, while the port supports commerce. Diverse property options range from urban to suburban to coastal at prices below San Juan.