Sabana Grande Municipio area

Sabana Grande Municipio, Puerto Rico covers 36.3 square miles: 36.3 square miles of land and 0.01 square miles of water. Its county seat is Sabana Grande. An estimated 22,055 people lived there in 2025.

Official Census measurements · GEOID 721212026 Gazetteer · retrieved September 27, 2026
Land area36.3 mi²
Water area0.01 mi²
Population (2025)22,055
People per mi²607

County outline

Generalized outline of Sabana Grande 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 Sabana Grande Municipio is located

Sabana Grande 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 100% of Sabana Grande Municipio’s measured area and water for 0%. Its combined area converts to 94.1 square kilometers or approximately 23,246 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land36.31294.04823,239.7
Water0.010.0266.4
Total36.32294.07423,246.1

How Sabana Grande Municipio compares

By original Census land area, Sabana Grande Municipio ranks #46 of 78 in Puerto Rico and #3157 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.865 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 1.1% 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 Sabana Grande Municipio

The Census Bureau estimates that 22,055 people lived in Sabana Grande Municipio on July 1, 2025. That ranks #1,772 of 3,222 county equivalents nationally and #54 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 22,731, the population has declined by 676 (−3%), compared with −3.1% for Puerto Rico as a whole.

With 36.3 square miles of land, that is 607 people per square mile (235 per km²), placing Sabana Grande Municipio #288 nationally for density and #51 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 1.1 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate22,70222,62922,34522,19622,18122,055
Change—−73−284−149−15−126

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 Sabana Grande Municipio

Puerto Rico has no incorporated places below the municipio: Sabana Grande 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

Sabana Grande Municipio is a central county of the Mayagüez, PR Metropolitan Statistical Area. Its 6 county equivalents have 206,355 residents on 310.1 square miles of land; Sabana Grande Municipio accounts for 11.7% of the land and 10.7% of the residents. By combined land it ranks #386 of 393 metropolitan areas, and #233 by population. It belongs to the Mayagüez-Aguadilla, PR Combined Statistical Area.

County equivalentPopulation 2025Land mi²
Mayagüez Municipio68,90577.6
Cabo Rojo Municipio46,58070.4
San Germán Municipio30,80954.4
Lajas Municipio22,78460
Sabana Grande Municipio22,05536.3
Hormigueros Municipio15,22211.3

ZIP codes

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

006060063700653

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 Sabana Grande Municipio

Sabana Grande Municipio shares a land border with 5 county equivalents. Each of them has more land than Sabana Grande Municipio. The largest neighbor is Yauco Municipio (67.8 mi²) and the smallest is Maricao Municipio (36.6 mi²). Together with its neighbors, Sabana Grande Municipio forms a block of 292.2 mi² of land, of which it holds 12.4%.

Map of Sabana Grande Municipio and the 5 county equivalents that border it Yauco Municipio, Puerto Rico: 67.8 mi² landSan Germán Municipio, Puerto Rico: 54.4 mi² landGuánica Municipio, Puerto Rico: 37.1 mi² landMaricao Municipio, Puerto Rico: 36.6 mi² landLajas Municipio, Puerto Rico: 60 mi² land
Sabana Grande 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. Sabana GrandeCompare
Yauco Municipio67.81.9× largerCompare
Lajas Municipio601.7× largerCompare
San Germán Municipio54.41.5× largerCompare
Guánica Municipio37.1about the sameCompare
Maricao Municipio36.6about the sameCompare

How big is Sabana Grande Municipio compared with U.S. states?

Sabana Grande 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 94 areas the size of Sabana Grande Municipio.

Land area: Sabana Grande Municipio and the closest-sized states
Sabana Grande Municipio36.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 6.03 miles (9.7 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 Sabana Grande Municipio?

Sabana Grande Municipio has more land than 65 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Sabana Grande Municipio36.3 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 Sabana Grande Municipio at #3,175 nationally by total area, 18 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%, compared with a national county-equivalent median of 1.2% — 1.1 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 Sabana Grande Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#3156Aguadilla Municipio, Puerto Rico36.5Compare
#3157Sabana Grande Municipio, Puerto Rico36.3This county
#3158Cidra Municipio, Puerto Rico36Compare

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 18.084483, -66.947609. 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: 94,046,670 m²; AWATER: 25,323 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 Sabana Grande Municipio?

Sabana Grande Municipio, Puerto Rico has 36.3 square miles (94 km²) of land and 0.01 square miles of water, for a total area of 36.3 square miles. It ranks #3157 of 3,222 U.S. county equivalents by land area.

Is Sabana Grande Municipio the largest county in Puerto Rico?

No. Sabana Grande Municipio ranks #46 of 78 in Puerto Rico by land area. The largest is Arecibo Municipio, with 126 square miles of land.

What counties border Sabana Grande Municipio?

Sabana Grande Municipio shares a land border with Yauco Municipio, San Germán Municipio, Guánica Municipio, Maricao Municipio, and Lajas Municipio.

What is the population of Sabana Grande Municipio?

The Census Bureau estimates Sabana Grande Municipio had 22,055 residents on July 1, 2025, ranking #1,772 of 3,222 county equivalents. That is 607 people per square mile of land.

What is the county seat of Sabana Grande Municipio?

The county seat of Sabana Grande Municipio is Sabana Grande.

Is Sabana Grande Municipio part of a metropolitan area?

Yes. It is a central county of the Mayagüez, PR Metropolitan Statistical Area, which has 6 county equivalents and 206,355 residents.

How many ZIP codes are in Sabana Grande Municipio?

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

It has less land than every state. Rhode Island, the smallest, has 28.5 times as much land.

How many acres of land are in Sabana Grande Municipio?

The land measurement converts to approximately 23,240 acres. Including water, total area is approximately 23,246 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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