Othón P. Blanco is one of the eleven subdivisions (municipios) of the Mexican state of Quintana Roo. It had a 2020 census population of 233,648 people. Its municipal seat is the city of Chetumal, which also serves as the state capital. The municipality is named after Othón P. Blanco Núñez de Cáceres.
The municipal government is headed by the municipal president of Othón P. Blanco (mayor of Othón P. Blanco, aka mayor of Chetumal).
Chetumal (UK: /ˌtʃɛtʊˈmɑːl/, US: /ˌtʃeɪtuˈ-/, Spanish: [tʃetuˈmal] ; Yucatec Maya: Chactemàal [tɕʰaktʰe̞mɐː˨˩l], lit. '"Place of the Red Wood"') is a city on the east coast of the Yucatán Peninsula in Mexico. It is the capital of the state of Quintana Roo and the municipal seat of the Municipality of Othón P. Blanco. In 2020 it had a population of 169,028 people.
The city is situated on the western side of Chetumal Bay, near the mouth of the Río Hondo. Chetumal is an important port for the region and operates as Mexico's main trading gateway with the neighboring country of Belize. Goods are transported via a road connecting Chetumal with Belize City to the south, and also via coastal merchant ships. There is a commercial airport, Chetumal International Airport, with airline service. Because of its location on the Caribbean coastline, it is vulnerable to tropical cyclones; Hurricane Janet and Hurricane Dean, both Category 5 storms, made landfall near Chetumal in 1955 and 2007 respectively.
Bacalar (Spanish: [bakaˈlaɾ] ) is the municipal seat and largest city in Bacalar Municipality (until 2011 a part of Othón P. Blanco Municipality) in the Mexican state of Quintana Roo, about 40 kilometres (25 mi) north of Chetumal. In the 2010 census the city had a population of 11,084. At that time it was still part of Othón P. Blanco, and was its second-largest city (locality), after Chetumal.