Hormigueros Municipio area

Hormigueros Municipio, Puerto Rico covers 11.3 square miles: 11.3 square miles of land and less than 0.001 square miles of water. Its county seat is Hormigueros. An estimated 15,222 people lived there in 2025.

Official Census measurements · GEOID 720672026 Gazetteer · retrieved September 27, 2026

The published water figure rounds to 0 mi²; the original Census field records 481 m² of water. Zero here is a rounded value.

Land area11.3 mi²
Water area<0.001 mi²
Population (2025)15,222
People per mi²1,342

County outline

Generalized outline of Hormigueros 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 Hormigueros Municipio is located

Hormigueros 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 more than 99.9% of Hormigueros Municipio’s measured area and water for less than 0.1%. Its combined area converts to 29.4 square kilometers or approximately 7,259 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land11.34229.3767,258.9
Water000
Total11.34229.3767,258.9

How Hormigueros Municipio compares

By original Census land area, Hormigueros Municipio ranks #77 of 78 in Puerto Rico and #3202 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.27 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 0.3% 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 Hormigueros Municipio

The Census Bureau estimates that 15,222 people lived in Hormigueros Municipio on July 1, 2025. That ranks #2,146 of 3,222 county equivalents nationally and #67 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 15,653, the population has declined by 431 (−2.8%), compared with −3.1% for Puerto Rico as a whole.

With 11.3 square miles of land, that is 1,342 people per square mile (518 per km²), placing Hormigueros Municipio #136 nationally for density and #14 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 0.477 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate15,61815,57315,40715,32515,28915,222
Change—−45−166−82−36−67

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 Hormigueros Municipio

Puerto Rico has no incorporated places below the municipio: Hormigueros 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

Hormigueros Municipio is an outlying county of the Mayagüez, PR Metropolitan Statistical Area. Its 6 county equivalents have 206,355 residents on 310.1 square miles of land; Hormigueros Municipio accounts for 3.7% of the land and 7.4% 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

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

0066000682

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 Hormigueros Municipio

Hormigueros Municipio shares a land border with 3 county equivalents. Each of them has more land than Hormigueros Municipio. The largest neighbor is Mayagüez Municipio (77.6 mi²) and the smallest is San Germán Municipio (54.4 mi²). Together with its neighbors, Hormigueros Municipio forms a block of 213.8 mi² of land, of which it holds 5.3%.

Map of Hormigueros Municipio and the 3 county equivalents that border it Cabo Rojo Municipio, Puerto Rico: 70.4 mi² landMayagüez Municipio, Puerto Rico: 77.6 mi² landSan Germán Municipio, Puerto Rico: 54.4 mi² land
Hormigueros 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. HormiguerosCompare
Mayagüez Municipio77.66.8× largerCompare
Cabo Rojo Municipio70.46.2× largerCompare
San Germán Municipio54.44.8× largerCompare

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

Hormigueros Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 91 times as much. Puerto Rico’s county land could hold about 302 areas the size of Hormigueros Municipio.

Land area: Hormigueros Municipio and the closest-sized states
Hormigueros Municipio11.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 3.37 miles (5.4 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 Hormigueros Municipio?

Hormigueros Municipio has more land than 20 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Hormigueros Municipio11.3 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 Hormigueros Municipio at #3,202 nationally by total area, the same position as its land rank. Changing the area definition does not change its position in this release.

Its water share is 0%, compared with a national county-equivalent median of 1.2% — 1.2 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 Hormigueros Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#3201Culebra Municipio, Puerto Rico11.6Compare
#3202Hormigueros Municipio, Puerto Rico11.3This county
#3203Martinsville city, Virginia11Compare

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 18.134695, -67.116199. 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: 29,374,571 m²; AWATER: 481 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 Hormigueros Municipio?

Hormigueros Municipio, Puerto Rico has 11.3 square miles (29.4 km²) of land and less than 0.001 square miles of water, for a total area of 11.3 square miles. It ranks #3202 of 3,222 U.S. county equivalents by land area.

Is Hormigueros Municipio the largest county in Puerto Rico?

No. Hormigueros Municipio ranks #77 of 78 in Puerto Rico by land area. The largest is Arecibo Municipio, with 126 square miles of land.

What counties border Hormigueros Municipio?

Hormigueros Municipio shares a land border with Cabo Rojo Municipio, Mayagüez Municipio, and San Germán Municipio.

What is the population of Hormigueros Municipio?

The Census Bureau estimates Hormigueros Municipio had 15,222 residents on July 1, 2025, ranking #2,146 of 3,222 county equivalents. That is 1,342 people per square mile of land.

What is the county seat of Hormigueros Municipio?

The county seat of Hormigueros Municipio is Hormigueros.

Is Hormigueros Municipio part of a metropolitan area?

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

How many ZIP codes are in Hormigueros Municipio?

2 ZIP Code Tabulation Areas have land in Hormigueros 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 Hormigueros Municipio compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 91.2 times as much land.

How many acres of land are in Hormigueros Municipio?

The land measurement converts to approximately 7,259 acres. Including water, total area is approximately 7,259 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.

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