San Pedro Sacatepéquez is a city, with a population of 49,589, and a municipality in the San Marcos department of Guatemala. The munici…San Pedro Sacatepéquez is a city, with a population of 49,589, and a municipality in the San Marcos department of Guatemala. The municipality covers an area of 114 km at an altitude of 2330 metres and has a population of 79,158.