There is inconsistency about the location of the village, and whether it is on an island or not, perhaps deliberately: according to The Prisoner: The Chimes of Big Ben it is located in the vicinity of Lithuania and Poland, on the Baltic Sea; according to The Prisoner: Many Happy Returns it is on the coast of Morocco or southern Portugal, possibly an island; it is implied in The Prisoner: Fall Out that the village is in England near London, in Kent county.
It was not always possible to mask the existence of civilization near Portmeirion, Wales, where much of the series was filmed. In several episodes neighboring towns and farms can be glimpsed. However, it should be noted the exact size of The Village is never specifically indicated, and there are numerous episodes that indicate it is significantly larger than the core settlement. Occasionally the Welsh flag can just about be glimpsed on the Village flag pole too.