County outline
Where Ceiba Municipio is located
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
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 29.044 | 75.224 | 18,588.2 |
| Water | 129.799 | 336.178 | 83,071.4 |
| Total | 158.843 | 411.401 | 101,659.5 |
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.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 11,275 | 11,112 | 10,874 | 10,758 | 10,675 | 10,559 |
| 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%.
| Bordering county equivalent | Land mi² | Size vs. Ceiba | Compare |
|---|---|---|---|
| Río Grande Municipio | 60.6 | 2.1× larger | Compare |
| Naguabo Municipio | 51.7 | 1.8× larger | Compare |
| Fajardo Municipio | 29.9 | about the same | Compare |
| Luquillo Municipio | 25.8 | 1.1× smaller | Compare |
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.
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.
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 rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #3169 | Fajardo Municipio, Puerto Rico | 29.9 | Compare |
| #3170 | Ceiba Municipio, Puerto Rico | 29 | This county |
| #3171 | Comerío Municipio, Puerto Rico | 28.4 | Compare |
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.
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.