Tula de Allende is a town and one of the 84 municipalities of Hidalgo in central-eastern Mexico. The municipality covers an area of 305.8 km2, and as of 2010, the municipality had a total population of 103,919. The municipality includes numerous smaller outlying towns, the largest of which are El Llano, San Marcos, and San Miguel Vindho. It is a regional economic center and one of Mexico's fastest growing cities.