County outline
Where Peñuelas Municipio is located
Area breakdown
Land accounts for 65.8% of Peñuelas Municipio’s measured area and water for 34.2%. Its combined area converts to 175.8 square kilometers or approximately 43,453 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 44.681 | 115.723 | 28,595.8 |
| Water | 23.215 | 60.127 | 14,857.6 |
| Total | 67.896 | 175.85 | 43,453.4 |
How Peñuelas Municipio compares
By original Census land area, Peñuelas Municipio ranks #35 of 78 in Puerto Rico and #3143 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.064 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 1.3% of the combined county land area in the state.
See the complete Puerto Rico ranking · What counts as a county equivalent?
Population and density of Peñuelas Municipio
The Census Bureau estimates that 19,325 people lived in Peñuelas Municipio on July 1, 2025. That ranks #1,926 of 3,222 county equivalents nationally and #60 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 20,390, the population has declined by 1,065 (−5.2%), compared with −3.1% for Puerto Rico as a whole.
With 44.7 square miles of land, that is 433 people per square mile (167 per km²), placing Peñuelas Municipio #385 nationally for density and #62 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 1.5 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 20,347 | 20,177 | 19,806 | 19,635 | 19,533 | 19,325 |
| Change | — | −170 | −371 | −171 | −102 | −208 |
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 Peñuelas Municipio
Puerto Rico has no incorporated places below the municipio: Peñuelas 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
Peñuelas Municipio is an outlying county of the Ponce, PR Metropolitan Statistical Area. Its 6 county equivalents have 262,792 residents on 365.6 square miles of land; Peñuelas Municipio accounts for 12.2% of the land and 7.4% of the residents. By combined land it ranks #383 of 393 metropolitan areas, and #194 by population. It belongs to the Ponce-Coamo, PR Combined Statistical Area.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Ponce Municipio | 128,384 | 114.9 |
| Juana Díaz Municipio | 45,853 | 60.4 |
| Yauco Municipio | 31,608 | 67.8 |
| Villalba Municipio | 21,133 | 35.6 |
| Peñuelas Municipio | 19,325 | 44.7 |
| Guayanilla Municipio | 16,489 | 42.2 |
ZIP codes
1 ZIP Code Tabulation Area has land in Peñuelas Municipio, and it lies mostly inside the county.
00624
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 Peñuelas Municipio
Peñuelas Municipio shares a land border with 3 county equivalents. It has more land than 1 of them. The largest neighbor is Ponce Municipio (114.9 mi²) and the smallest is Guayanilla Municipio (42.2 mi²). Together with its neighbors, Peñuelas Municipio forms a block of 268.5 mi² of land, of which it holds 16.6%.
| Bordering county equivalent | Land mi² | Size vs. Peñuelas | Compare |
|---|---|---|---|
| Ponce Municipio | 114.9 | 2.6× larger | Compare |
| Adjuntas Municipio | 66.6 | 1.5× larger | Compare |
| Guayanilla Municipio | 42.2 | 1.1× smaller | Compare |
How big is Peñuelas Municipio compared with U.S. states?
Peñuelas Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 23 times as much. Puerto Rico’s county land could hold about 77 areas the size of Peñuelas Municipio.
Another way to picture it: the same land area would fill a square about 6.68 miles (10.8 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 Peñuelas Municipio?
Peñuelas Municipio has more land than 79 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 Peñuelas Municipio at #3,134 nationally by total area, 9 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 34.2%, compared with a national county-equivalent median of 1.2% — 33 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 Peñuelas Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #3142 | Humacao Municipio, Puerto Rico | 44.7 | Compare |
| #3143 | Peñuelas Municipio, Puerto Rico | 44.7 | This county |
| #3144 | Jayuya Municipio, Puerto Rico | 44.5 | 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 18.026647, -66.728237. 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: 115,722,059 m²; AWATER: 60,127,075 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 big is Peñuelas Municipio?
Peñuelas Municipio, Puerto Rico has 44.7 square miles (115.7 km²) of land and 23.2 square miles of water, for a total area of 67.9 square miles. It ranks #3143 of 3,222 U.S. county equivalents by land area.
Is Peñuelas Municipio the largest county in Puerto Rico?
No. Peñuelas Municipio ranks #35 of 78 in Puerto Rico by land area. The largest is Arecibo Municipio, with 126 square miles of land.
What counties border Peñuelas Municipio?
Peñuelas Municipio shares a land border with Ponce Municipio, Guayanilla Municipio, and Adjuntas Municipio.
What is the population of Peñuelas Municipio?
The Census Bureau estimates Peñuelas Municipio had 19,325 residents on July 1, 2025, ranking #1,926 of 3,222 county equivalents. That is 433 people per square mile of land.
What is the county seat of Peñuelas Municipio?
The county seat of Peñuelas Municipio is Peñuelas.
Is Peñuelas Municipio part of a metropolitan area?
Yes. It is an outlying county of the Ponce, PR Metropolitan Statistical Area, which has 6 county equivalents and 262,792 residents.
How many ZIP codes are in Peñuelas Municipio?
1 ZIP Code Tabulation Area has land in Peñuelas Municipio, and 1 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Peñuelas Municipio compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 23.1 times as much land.
How many acres of land are in Peñuelas Municipio?
The land measurement converts to approximately 28,596 acres. Including water, total area is approximately 43,453 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.