County outline
Where Río Grande Municipio is located
Area breakdown
Land accounts for 67.7% of Río Grande Municipio’s measured area and water for 32.3%. Its combined area converts to 231.8 square kilometers or approximately 57,270 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 60.583 | 156.909 | 38,773.1 |
| Water | 28.901 | 74.853 | 18,496.6 |
| Total | 89.484 | 231.762 | 57,269.8 |
How Río Grande Municipio compares
By original Census land area, Río Grande Municipio ranks #15 of 78 in Puerto Rico and #3114 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.443 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 1.8% of the combined county land area in the state.
See the complete Puerto Rico ranking · What counts as a county equivalent?
What stands out about Río Grande Municipio?
Río Grande Municipio has more land than 108 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Río Grande Municipio at #3,116 nationally by total area, 2 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 32.3%, compared with a national county-equivalent median of 1.2% — 31.1 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Río Grande Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #3113 | District of Columbia, District of Columbia | 61.1 | Compare |
| #3114 | Río Grande Municipio, Puerto Rico | 60.6 | This county |
| #3115 | Juana Díaz Municipio, Puerto Rico | 60.4 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 18.376568, -65.798352. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 156,908,961 m²; AWATER: 74,852,642 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How many acres of land are in Río Grande Municipio?
The land measurement converts to approximately 38,773 acres. Including water, total area is approximately 57,270 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.