Alcalde is the traditional Spanish municipal magistrate, who had both judicial and administrative functions. An alcalde was, in the absence of a corregidor, the presiding officer of the Castilian cabildo and judge of first instance of a town. Alcaldes were elected annually, without the right to reelection for two or three years, by the regidores of the municipal council. The office of the alcalde was signified by a staff of office, which they were to take with them when doing their business. A woman who holds the office is termed an Alcaldesa.

A cabildo or ayuntamiento was a Spanish colonial and early postcolonial administrative council that governed a municipality. Cabildos were sometimes appointed, sometimes elected, but were considered to be representative of all land-owning heads of household (vecinos). The colonial cabildo was essentially the same as the one that was developed in medieval Castile.