Suchiate is a municipality in the Mexican state of Chiapas, on the border with Guatemala. It is in the Soconusco region, and is the southernmost municipality both in Chiapas and in all of Mexico. On the eastern edge of the municipality, flowing from north to south, is the Río Suchiate, which forms the international border. Two communities within the municipality are border crossings with Guatemala, Ciudad Hidalgo and Talismán. Ciudad Hidalgo is the municipal seat and has a customs house at the border. Suchiate reported a 2010 census population of 35,056 persons. It has a land area of .