Colombia, officially the Republic of Colombia is a constitutional republic in northwestern South America. Colombia is bordered to the east by Venezuela and Brazil;to the south by Ecuador and Peru;to the north by the Caribbean Sea; to the northwest by Panama; and to the west by the Pacific Ocean. Colombia also shares maritime borders with Venezuela, Jamaica, Haiti, the Dominican Republic, Honduras, Nicaragua and Costa Rica. With a population of over 45 million people, Colombia has the 29th largest population in the world and the second largest in South America, after Brazil. Colombia has the third largest population of any Spanish-speaking country in the world, after Mexico and Spain. Bogota is its capital.