So important already was the city that its ayuntamiento had the powers of a Spanish city of the second class.
It was created a villa with an ayuntamiento (city council) in 1743.
In the municipality the alcalde (mayor) was appointed by the governor-general, and the ayuntamiento (council) was controlled by the veto of the provincial governor and by the assembly of the province.
The local authorities were divided among themselves by bitter feuds - the ecclesiastical against the civil, the ayuntamiento against the governors, the administrative officers among themselves; brigandage, mutinies and intestinal struggles disturbed the peace.
In the next year it received an ayuntamiento (council).