Atlacomulco is one of 125 municipalities in the State of Mexico located in the northwest of the State of Mexico in central Mexico, 63 kilometres (39 mi) from the state capital of Toluca. The municipal seat is the city of Atlacomulco de Fabela. The name is derived from the Nahuatl phrase "atlacomulli" which means "where there are wells." The city, with a population of 109,384 is surrounded by rural area in which 75% of the rest of the municipality lives. The municipality has a sizable percentage of indigenous language speakers, mostly Mazahua. The Mazahua name for the area is Embaró, which means "colored rock." Agriculture is still the main economic activity, but the development of a number of industrial parks, such as Atlacomulco 2000, which allowed the seat to reach city statues by 1987. Atlacomulco is also the origin of a political organization called the "Atlacomulco Group" made up of powerful political figures who deny its existence.