Luquillo Municipio area

Population and density of Luquillo Municipio

The Census Bureau estimates that 17,190 people lived in Luquillo Municipio on July 1, 2025. That ranks #2,029 of 3,222 county equivalents nationally and #63 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 17,779, the population has declined by 589 (−3.3%), compared with −3.1% for Puerto Rico as a whole.

With 25.8 square miles of land, that is 666 people per square mile (257 per km²), placing Luquillo Municipio #266 nationally for density and #47 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 0.961 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 Luquillo Municipio

Puerto Rico has no incorporated places below the municipio: Luquillo 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

Luquillo Municipio is an outlying county of the San Juan-Bayamón-Caguas, PR Metropolitan Statistical Area. Its 40 county equivalents have 2,024,195 residents on 1,437.8 square miles of land; Luquillo Municipio accounts for 1.8% of the land and 0.8% of the residents. By combined land it ranks #229 of 393 metropolitan areas, and #36 by population. It belongs to the San Juan-Bayamón, PR Combined Statistical Area.

ZIP codes

1 ZIP Code Tabulation Area has land in Luquillo Municipio, and it lies mostly inside the county.

00773

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 Luquillo Municipio

Luquillo Municipio shares a land border with 3 county equivalents. Each of them has more land than Luquillo Municipio. The largest neighbor is Río Grande Municipio (60.6 mi²) and the smallest is Ceiba Municipio (29 mi²). Together with its neighbors, Luquillo Municipio forms a block of 145.4 mi² of land, of which it holds 17.8%.

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

Luquillo Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 40 times as much. Puerto Rico’s county land could hold about 133 areas the size of Luquillo Municipio.

Another way to picture it: the same land area would fill a square about 5.08 miles (8.2 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 Luquillo Municipio?

Luquillo Municipio has more land than 43 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 Luquillo Municipio at #3,158 nationally by total area, 21 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 44.5%, compared with a national county-equivalent median of 1.2% — 43.4 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 Luquillo 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.