San Miguel Ixtahuacán is a municipality in the San Marcos department of Guatemala. It comprises 19 villages, and the population is about 39,0…San Miguel Ixtahuacán is a municipality in the San Marcos department of Guatemala. It comprises 19 villages, and the population is about 39,000 people. The majority of people are ethnically Maya- Mam and speak the Mam and Spanish languages. Most inhabitants subsist by farming, growing crops of corn, beans, vegetables and fruits, irrigated from the Cuilco River and its tributaries.