Interestingly, it is term that does not appear in the dictionary of the RAE or in María Moliner.
Saludos a synonym for collación is fegresía.
COLLACIÓN: synonym of parish, i.e. the territorial space attached to a parish church. Collación also has the meaning of neighbourhood and they were also exploited as a municipal Administrative Division, for tax purposes and recruitment and military mobilization.Fuentehttp://www.tarifaweb.com/aljaranda/NUM1/art8.htm
COLLACIÓN: It is named for the territory, or district that delimits a parish or church. Formerly guilds, in the absence of the official career came in procession of penitence through the streets of his collación, such as today is the via Crucis.