The primary coordinate point for Rio Grande is located at latitude 18.3802 and longitude -65.8313 in Río Grande Municipio.
The formal boundaries for the Río Grande encompass a land area of 1.38 sq. miles and a water area of 0 sq. miles.
Río Grande Municipio is in the Atlantic time zone (GMT -4).
The Río Grande has a U5 Census Class Code which indicates populated place that is also a census designated place with the same name. It also has a Functional Status Code of "S" which identifies a statistical entity.