Administrative divisions of Puerto Rico
Puerto Rico is divided into 1 first-level administrative divisions:
Largest cities in Puerto Rico
| # | City | Population |
|---|---|---|
| 1 | San Juan | 2,478,905 |
| 2 | Mayagüez | 291,339 |
| 3 | Ponce | 160,334 |
| 4 | Arecibo | 69,307 |
San Juan is the largest urban area in Puerto Rico with about 2,478,905 people.
Terrain, rivers & lakes
Highest terrain in Puerto Rico: ≈ 1,320 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
No major named rivers or lakes are mapped for Puerto Rico at this map scale.
Ethnic groups in Puerto Rico
White 75.8%, Black/African American 12.4%, other 8.5% (includes American Indian, Alaskan Native, Native Hawaiian, other Pacific Islander, and others), mixed 3.3% (2010 est.)
Regionally, White is the most common ethnic group across most of the 1 divisions.
Source: CIA World Factbook (2010 est.) · regional dominance compiled by Glostats from censuses and surveys
Religions in Puerto Rico
Roman Catholic 56%, Protestant 33% (largely Pentecostal), other 2%, atheist 1%, none 7% (2014 est.)
Regionally, Roman Catholic is the most common religious group across most of the 1 divisions.
Source: CIA World Factbook (2014 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Puerto Rico
Spanish, English
Regionally, Spanish is the most common language group across most of the 1 divisions.
Source: CIA World Factbook · regional dominance compiled by Glostats from censuses and surveys
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CubaSources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-19. More about our data.