Demography
From a demographic standpoint, the whole region suffered the ravages of migration and demographic aging, which also left indelible consequences in mountain parishes. However, Castro de Rei did not experience these fluctuations in other municipalities in Lugo. Throughout the century the population stood at about six or seven thousand, making the effective population loss not as alarming as in the mountain municipalities of Lugo. Castro de Rei has 25 civil parishes. It has a population density of 32.7 habitants/km2.
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