After the Greek liberation, begins a long period of decline and economic recession on the island for about a century. Hydra despite its small size and the economic decline, has given the country's political life a President of the Republic, five prime ministers and many ministers.

George Koundouriotis was Chairman of the Executive committee during the Revolution, also member of the Council of Kapodistrias and Prime Minister and Minister of the Navy. Antonios Kriezis was a Minister, Dimitrios Voulgaris was seven times Prime Minister of Greece, Athanasios Miaoulis three times Prime Minister of Greece, and Petros Voulgaris one time Prime Minister of Greece.