Mexico, officially the United Mexican States, is a federal republic in North America. It is bordered on the north by the US, on the south and west by the Pacific Ocean, on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of Mexico. Covering over 760,000 square miles, Mexico is the fifth largest country in the Americas by total area and the 13th largest independent nation in the world. With an estimated population of over 113 million, it is the eleventh most populous and the most populous Spanish-speaking country in the world and the second most populous country in Latin America. According to OECD, in Mexico, the average net adjusted disposable income of the top 20% of the population is an estimated $32,756/ year, whereas the bottom 20% earn an estimated $2,570/ year.