Portugal has an administrative structure of 308 municipalities (Portuguese singular/plural: concelho/concelhos), which are subdivided into more than 4,000 parishes (freguesia/freguesias). Municipalities are grouped for administrative purposes into superior units. For continental Portugal the municipalities are gathered in 18 Districts, while the Islands have a Regional Government directly above them. Thus, the largest unit of classification is the one established since 1976 into either mainland Portugal (Portugal Continental) or the autonomous regions of Portugal (Azores and Madeira).
The European Union’s system of Nomenclature of Territorial Units for Statistics is also used. According to this system, Portugal is divided into 7 regions (Alentejo, Algarve, Açores, Centro, Lisboa, Madeira, and Norte), which are subdivided into 30 subregions.
