From 1768, local government in the form of so-called Ayuntamientos and presided by an elected Alcalde (equivalent of Mayor), was in place in Mazo.

Following the revolutionary upheavals of 1868, the first elections to the municipal government under the new electoral system (universal suffrage of males over 25) were held in Mazo in January 1869.

In April 1956, the municipality of Mazo came to be called Villa de Mazo, on the request of the Provincial Delegation of the Instituto Nacional de Estadística, in order to differentiate it from other places in peninsular Spain with the same or similar-sounding name, although this was not approved by government until 1958.

The site can be visited and includes a small visitor center with exhibits of objects excavated there.

[5] A municipal museum is hosted in the Casa Roja, a building in the town center dating from the early years of the 20th century.