Guánica Municipio area

Population and density of Guánica Municipio

The Census Bureau estimates that 11,840 people lived in Guánica Municipio on July 1, 2025. That ranks #2,361 of 3,222 county equivalents nationally and #71 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 13,788, the population has declined by 1,948 (−14.1%), compared with −3.1% for Puerto Rico as a whole.

With 37.1 square miles of land, that is 319 people per square mile (123 per km²), placing Guánica Municipio #487 nationally for density and #71 in Puerto Rico. The median county equivalent has 47 people per square mile; the Puerto Rico median is 754. Put another way, there are about 2 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Guánica Municipio

Puerto Rico has no incorporated places below the municipio: Guánica Municipio is itself the local government. The Census Bureau describes the settlements inside it, such as zonas urbanas and comunidades, as statistical places, and publishes no separate annual estimates for them.

Metropolitan area

Guánica Municipio is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

2 ZIP Code Tabulation Areas have land in Guánica Municipio, and each lies mostly inside the county.

0064700653

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Guánica Municipio

Guánica Municipio shares a land border with 3 county equivalents. It has more land than 1 of them. The largest neighbor is Yauco Municipio (67.8 mi²) and the smallest is Sabana Grande Municipio (36.3 mi²). Together with its neighbors, Guánica Municipio forms a block of 201.2 mi² of land, of which it holds 18.4%.

How big is Guánica Municipio compared with U.S. states?

Guánica Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 28 times as much. Puerto Rico’s county land could hold about 92 areas the size of Guánica Municipio.

Another way to picture it: the same land area would fill a square about 6.09 miles (9.8 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Guánica Municipio?

Guánica Municipio has more land than 68 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 Guánica Municipio at #3,120 nationally by total area, 34 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 53.3%, compared with a national county-equivalent median of 1.2% — 52.2 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 Guánica Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.