Tapachula is a municipio (municipality) an city with a hot, humid climate in the Mexican state of Chiapas. It is located in southern part of the state on the Soconusco coastal plain, near the border with Guatemala, at 14.91° N 92.27° W. In the 2005 census the population of the municipality was 282,420 people, whereas the city of Tapachula had a population of 189,991 (more than two-thirds of the municipality's total). The city and the municipality both rank second in the state in population, behind Tuxtla Gutiérrez.