Yauco Municipio area

Yauco Municipio, Puerto Rico covers 68.4 square miles: 67.8 square miles of land and 0.627 square miles of water. Its county seat is Yauco. An estimated 31,608 people lived there in 2025.

Official Census measurements · GEOID 721532026 Gazetteer · retrieved September 27, 2026
Land area67.8 mi²
Water area0.627 mi²
Population (2025)31,608
People per mi²467

County outline

Generalized outline of Yauco Municipio, Puerto Rico
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Yauco Municipio is located

Yauco Municipio highlighted on a map of all U.S. county equivalents. Puerto Rico is repositioned as an inset at the common scale. About the maps

Area breakdown

Land accounts for 99.1% of Yauco Municipio’s measured area and water for 0.9%. Its combined area converts to 177.1 square kilometers or approximately 43,762 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land67.751175.47443,360.6
Water0.6271.624401.3
Total68.378177.09843,761.9

How Yauco Municipio compares

By original Census land area, Yauco Municipio ranks #9 of 78 in Puerto Rico and #3106 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.613 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 2% 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 Yauco Municipio

The Census Bureau estimates that 31,608 people lived in Yauco Municipio on July 1, 2025. That ranks #1,438 of 3,222 county equivalents nationally and #37 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 34,178, the population has declined by 2,570 (−7.5%), compared with −3.1% for Puerto Rico as a whole.

With 67.8 square miles of land, that is 467 people per square mile (180 per km²), placing Yauco Municipio #360 nationally for density and #59 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 1.4 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate34,05433,62332,92632,44932,13031,608
Change—−431−697−477−319−522

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 Yauco Municipio

Puerto Rico has no incorporated places below the municipio: Yauco 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

Yauco 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; Yauco Municipio accounts for 18.5% of the land and 12% 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 equivalentPopulation 2025Land mi²
Ponce Municipio128,384114.9
Juana Díaz Municipio45,85360.4
Yauco Municipio31,60867.8
Villalba Municipio21,13335.6
Peñuelas Municipio19,32544.7
Guayanilla Municipio16,48942.2

ZIP codes

3 ZIP Code Tabulation Areas have land in Yauco Municipio; 1 of them have most of their land inside the county, and the others mainly cover neighboring areas.

006060065600698

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Yauco Municipio

Yauco Municipio shares a land border with 6 county equivalents. It has more land than every one of them. The largest neighbor is Adjuntas Municipio (66.6 mi²) and the smallest is Sabana Grande Municipio (36.3 mi²). Together with its neighbors, Yauco Municipio forms a block of 348.1 mi² of land, of which it holds 19.5%.

Map of Yauco Municipio and the 6 county equivalents that border it Guayanilla Municipio, Puerto Rico: 42.2 mi² landSabana Grande Municipio, Puerto Rico: 36.3 mi² landMaricao Municipio, Puerto Rico: 36.6 mi² landGuánica Municipio, Puerto Rico: 37.1 mi² landAdjuntas Municipio, Puerto Rico: 66.6 mi² landLares Municipio, Puerto Rico: 61.4 mi² land
Yauco Municipio (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. YaucoCompare
Adjuntas Municipio66.6about the sameCompare
Lares Municipio61.41.1× smallerCompare
Guayanilla Municipio42.21.6× smallerCompare
Guánica Municipio37.11.8× smallerCompare
Maricao Municipio36.61.9× smallerCompare
Sabana Grande Municipio36.31.9× smallerCompare

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

Yauco Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 15 times as much. Puerto Rico’s county land could hold about 51 areas the size of Yauco Municipio.

Land area: Yauco Municipio and the closest-sized states
Yauco Municipio67.8 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 8.23 miles (13.2 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 Yauco Municipio?

Yauco Municipio has more land than 116 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Yauco Municipio67.8 mi²
Puerto Rico median42 mi²
National median604.5 mi²

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 Yauco Municipio at #3,131 nationally by total area, 25 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 0.9%, compared with a national county-equivalent median of 1.2% — 0.3 percentage points lower. 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 Yauco Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#3105Newport News city, Virginia69Compare
#3106Yauco Municipio, Puerto Rico67.8This county
#3107Adjuntas Municipio, Puerto Rico66.6Compare

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 18.085411, -66.858413. 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: 175,473,192 m²; AWATER: 1,624,557 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Yauco Municipio?

Yauco Municipio, Puerto Rico has 67.8 square miles (175.5 km²) of land and 0.627 square miles of water, for a total area of 68.4 square miles. It ranks #3106 of 3,222 U.S. county equivalents by land area.

Is Yauco Municipio the largest county in Puerto Rico?

No. Yauco Municipio ranks #9 of 78 in Puerto Rico by land area. The largest is Arecibo Municipio, with 126 square miles of land.

What counties border Yauco Municipio?

Yauco Municipio shares a land border with Guayanilla Municipio, Sabana Grande Municipio, Maricao Municipio, Guánica Municipio, Adjuntas Municipio, and Lares Municipio.

What is the population of Yauco Municipio?

The Census Bureau estimates Yauco Municipio had 31,608 residents on July 1, 2025, ranking #1,438 of 3,222 county equivalents. That is 467 people per square mile of land.

What is the county seat of Yauco Municipio?

The county seat of Yauco Municipio is Yauco.

Is Yauco 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 Yauco Municipio?

3 ZIP Code Tabulation Areas have land in Yauco 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 Yauco Municipio compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 15.3 times as much land.

How many acres of land are in Yauco Municipio?

The land measurement converts to approximately 43,361 acres. Including water, total area is approximately 43,762 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.

Cite this county

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