Ceiba Municipio area

Ceiba Municipio, Puerto Rico covers 158.8 square miles: 29 square miles of land and 129.8 square miles of water. Its county seat is Ceiba. An estimated 10,559 people lived there in 2025.

Official Census measurements · GEOID 720372026 Gazetteer · retrieved September 27, 2026
Land area29 mi²
Water area129.8 mi²
Population (2025)10,559
People per mi²364

County outline

Generalized outline of Ceiba 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 Ceiba Municipio is located

Ceiba 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 18.3% of Ceiba Municipio’s measured area and water for 81.7%. Its combined area converts to 411.4 square kilometers or approximately 101,660 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land29.04475.22418,588.2
Water129.799336.17883,071.4
Total158.843411.401101,659.5

How Ceiba Municipio compares

By original Census land area, Ceiba Municipio ranks #57 of 78 in Puerto Rico and #3170 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.692 times the Puerto Rico county-equivalent median of 42 square miles. It accounts for 0.8% 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 Ceiba Municipio

The Census Bureau estimates that 10,559 people lived in Ceiba Municipio on July 1, 2025. That ranks #2,446 of 3,222 county equivalents nationally and #73 of 78 in Puerto Rico. Since the April 1, 2020 estimates base of 11,301, the population has declined by 742 (−6.6%), compared with −3.1% for Puerto Rico as a whole.

With 29 square miles of land, that is 364 people per square mile (140 per km²), placing Ceiba Municipio #442 nationally for density and #66 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 1.8 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate11,27511,11210,87410,75810,67510,559
Change—−163−238−116−83−116

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 Ceiba Municipio

Puerto Rico has no incorporated places below the municipio: Ceiba 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

Ceiba 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; Ceiba Municipio accounts for 2% of the land and 0.5% 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

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

007180073500738

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 Ceiba Municipio

Ceiba Municipio shares a land border with 4 county equivalents. It has more land than 1 of them. The largest neighbor is Río Grande Municipio (60.6 mi²) and the smallest is Luquillo Municipio (25.8 mi²). Together with its neighbors, Ceiba Municipio forms a block of 197 mi² of land, of which it holds 14.7%.

Map of Ceiba Municipio and the 4 county equivalents that border it Naguabo Municipio, Puerto Rico: 51.7 mi² landFajardo Municipio, Puerto Rico: 29.9 mi² landRío Grande Municipio, Puerto Rico: 60.6 mi² landLuquillo Municipio, Puerto Rico: 25.8 mi² land
Ceiba 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. CeibaCompare
Río Grande Municipio60.62.1× largerCompare
Naguabo Municipio51.71.8× largerCompare
Fajardo Municipio29.9about the sameCompare
Luquillo Municipio25.81.1× smallerCompare

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

Ceiba Municipio has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 36 times as much. Puerto Rico’s county land could hold about 118 areas the size of Ceiba Municipio.

Land area: Ceiba Municipio and the closest-sized states
Ceiba Municipio29 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 5.39 miles (8.7 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 Ceiba Municipio?

Ceiba Municipio has more land than 52 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Ceiba Municipio29 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 Ceiba Municipio at #3,075 nationally by total area, 95 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 81.7%, compared with a national county-equivalent median of 1.2% — 80.5 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 Ceiba Municipio in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#3169Fajardo Municipio, Puerto Rico29.9Compare
#3170Ceiba Municipio, Puerto Rico29This county
#3171Comerío Municipio, Puerto Rico28.4Compare

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 18.253265, -65.620765. 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: 75,224,831 m²; AWATER: 336,178,504 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 Ceiba Municipio?

Ceiba Municipio, Puerto Rico has 29 square miles (75.2 km²) of land and 129.8 square miles of water, for a total area of 158.8 square miles. It ranks #3170 of 3,222 U.S. county equivalents by land area.

Is Ceiba Municipio the largest county in Puerto Rico?

No. Ceiba Municipio ranks #57 of 78 in Puerto Rico by land area. The largest is Arecibo Municipio, with 126 square miles of land.

What counties border Ceiba Municipio?

Ceiba Municipio shares a land border with Naguabo Municipio, Fajardo Municipio, Río Grande Municipio, and Luquillo Municipio.

What is the population of Ceiba Municipio?

The Census Bureau estimates Ceiba Municipio had 10,559 residents on July 1, 2025, ranking #2,446 of 3,222 county equivalents. That is 364 people per square mile of land.

What is the county seat of Ceiba Municipio?

The county seat of Ceiba Municipio is Ceiba.

Is Ceiba Municipio part of a metropolitan area?

Yes. It is an outlying county of the San Juan-Bayamón-Caguas, PR Metropolitan Statistical Area, which has 40 county equivalents and 2,024,195 residents.

How many ZIP codes are in Ceiba Municipio?

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

It has less land than every state. Rhode Island, the smallest, has 35.6 times as much land.

How many acres of land are in Ceiba Municipio?

The land measurement converts to approximately 18,588 acres. Including water, total area is approximately 101,660 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

Download the complete CSV or JSON dataset