聖馬科斯省
The towns were rebuilt and on 3 December 1926, San Pedro was designated as a city, but on 16 December 1935, it was annexed to San Marcos forming the municipality of La Unión San Marcos. However, this system did not work and La Unión San Marcos was broken apart on 20 July 1945, but San Pedro Sacatepéquez lost the capital of San Marcos Department to the municipality of San Marcos.