Quintana Roo ( kin-TAH-nə ROH(-oh), Spanish: [kinˈtana ˈroo]), officially the Free and Sovereign State of Quintana Roo (Spanish: Estado Libre y Soberano de Quintana Roo), is one of the 32 states which compose the federal entities of Mexico. It is divided into 11 municipalities and its capital city is Chetumal.
Quintana Roo is located on the eastern part of the Yucatán Peninsula and is bordered by the states of Campeche to the west and Yucatán to the northwest, and by the Orange Walk and Corozal districts of Belize, along with an offshore borderline with Belize District to the south. As Mexico's easternmost state, Quintana Roo has a coastline to the east with the Caribbean Sea and to the north with the Gulf of Mexico. The state previously covered 44,705 square kilometers (17,261 sq mi) and shared a small border with Guatemala in the southwest of the state. However, in 2013, Mexico's Supreme Court of Justice of the Nation resolved the boundary dispute between Quintana Roo, Campeche, and Yucatán stemming from the creation of the Calakmul municipality by Campeche in 1997, siding with Campeche and thereby benefiting Yucatán.Quintana Roo is the home of the city of Cancún, the islands of Cozumel and Isla Mujeres, and the towns of Bacalar, Playa del Carmen and Akumal, as well as the ancient Maya ruins of Chacchoben, Cobá, Kohunlich, Muyil, Tulum, Xel-Há, and Xcaret. The Sian Ka'an biosphere reserve is also located in the state.
The statewide population is expanding at a rapid rate due to the construction of hotels and the demand for workers. Many migrants come from Yucatán, Campeche, Tabasco, and Veracruz. The state is frequently hit by severe hurricanes due to its exposed location, the most recent and severe being Hurricane Dean in 2007, which made landfall with sustained winds of 280 km/h (170 mph), with gusts up to 320 km/h (200 mph).