Peniche is a seaside municipality and a city in the Oeste region, in the historical province of Estremadura, and in the Leiria District. It has 26…Peniche is a seaside municipality and a city in the Oeste region, in the historical province of Estremadura, and in the Leiria District. It has 26,431 inhabitants, in an area of 77.55 km². The city itself has a population of about 15,600 inhabitants. The present mayor is Henrique Bertino, elected by the independent coalition GCEPP. The idiomatic expression Friend from Peniche, used to describe someone who wants to receive things at the expense of other without giving anything in return, comes from here.