Desecheo Island in the context of "Barrio"

The geography of Puerto Rico encompasses the geographical features of Puerto Rico, a Caribbean archipelagic and island nation centered around a collective identity based on its land, history, ethnicity, culture, and language, and organized as a self-governing unincorporated territory of the United States. Located between the Greater and Lesser Antilles in the northeastern Caribbean Sea, east of Hispaniola, west of Saint Thomas, north of Venezuela, and south of the Puerto Rico Trench, it consists of the eponymous main island of Puerto Rico and 142 smaller islands, islets, and cays, including San Juan Islet in the north, Vieques and Culebra islands in the Virgin Islands, and Palominos island and Icacos cay in La Cordillera nature reserve in the east, Caja de Muertos island in Caja de Muertos reserve, and Caracoles and Media Luna cays in La Parguera reserve in the south, and Mona, Monito, and Desecheo islands in the Mona Passage in the west.

Measuring 177 km (110 mi; 96 nmi) in length and 65 km (40 mi; 35 nmi) in width with a land area of 8,868 sq km (3,424 sq mi), the main island of Puerto Rico is the 4th largest in the Caribbean, 29th in the Americas, and 81st in the world, making it the 170th largest country or dependency by surface area. With 3.2 million residents, it is also the 4th largest in the Caribbean, 4th in the Americas, and 31st in the world, making it the 136th largest country or dependency by population.

Mona Island (Spanish: Isla de Mona) is the third-largest island of the Puerto Rican archipelago, after the main island of Puerto Rico and Vieques. It is the largest of three islands in the Mona Passage, the strait between Hispaniola and Puerto Rico, with the others being Monito Island and Desecheo Island. It measures about 7 miles by 4 miles (11 km by 7 km), and lies 41 mi (66 km) west of Puerto Rico, of which it is administratively a part. It is one of two islands that make up the Isla de Mona e Islote Monito barrio in the municipality of Mayagüez.

The island is managed under the Mona and Monito Islands Nature Reserve (Reserva Natural Islas de Mona y Monito). There are no permanent inhabitants; only rangers and biologists from the Puerto Rico Department of Natural and Environmental Resources reside on the island, to manage visitors and take part in research projects. The island, along with Monito, form part of the Mona and Monito Islands National Natural Landmark which recognizes and preserves the islands' ecosystem as an outstanding example of diversity and natural history. The island is home to a number of endemic species such as the Mona ground iguana and it is an important seabird area.

This is a list of islands of Puerto Rico.

The Commonwealth of Puerto Rico has over 143 islands, keys, and islets. Only the main island of Puerto Rico (3,424 sq mi [8,868 km2]), and the islands of Vieques (51 sq mi [130 km]), and Culebra (10 sq mi [26 km]) are inhabited. Mona Island (22 sq mi [57 km]) has personnel from the Puerto Rico Department of Natural and Environmental Resources (DNER) stationed year-around but no private citizens inhabit it (other than overnight camping guests and nature enthusiasts). Caja de Muertos Island (0.58 sq mi [1.5 km]) is also a DNER Nature Reserve, while Desecheo Island (0.58 sq mi [1.5 km]) is a National Wildlife Refuge administrated by the US Fish and Wildlife Service.

Isla de Mona e Islote Monito is an island-barrio of Mayagüez, Puerto Rico. The U.S. census of 2000 reports six housing units, but a population of zero. The barrio is made up of the islands of Mona and Monito. In 2010, there was a population of 5. This is the largest barrio of Mayagüez by area. The total land area of both islands in the barrio is about 56.93 km (Mona Island 56.783 km and nearby Monito Island 0.147 km), and it comprises 28.3 percent of the total land area of the municipality of Mayagüez. Desecheo Island, 49 km to the northeast, is part of Sabanetas barrio. The Mona Island Lighthouse is located in the barrio. Isla de Mona e Islote Monito is surrounded by the Mona Passage.

Mona Island (Spanish: Isla de Mona) is the third-largest island of the Puerto Rican archipelago, after the main island of Puerto Rico and Vieques. It is the largest of three islands in the Mona Passage, the strait between Hispaniola and Puerto Rico, with the others being Monito Island and Desecheo Island. It measures about 7 miles by 4 miles (11 km by 7 km), and lies 41 mi (66 km) west of Puerto Rico, of which it is administratively a part as one of two islands comprising the Isla de Mona e Islote Monito barrio in the municipality of Mayagüez.

The island is managed under the Mona and Monito Islands Nature Reserve (Reserva Natural Islas de Mona y Monito). There are no permanent inhabitants, as only rangers and biologists from the Puerto Rico Department of Natural and Environmental Resources temporarily reside on the island to manage visitors and take part in research projects. along with the neighboring island of Monito, it forms part of the Mona and Monito Islands National Natural Landmark which recognizes and preserves the ecosystem of the islands as an outstanding example of diversity and natural history. The island is home to a number of endemic species such as the Mona ground iguana, and it is an important seabird area.