It is administered by the Cabo de Hornos municipality in the South American mainland.
As a commune, Antártica is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years.
[5] The communal council has the following members: Daniel Fernando Valdebenito Contreras (PS) Ángela Barría Barrientos (RN) Juan Velásquez (PS) Carolina Guenel González (DC) Francis Delgado Ibaceta (RN) Paola Speake Ojeda (DC) Within the electoral divisions of Chile, Antártica is represented in the Chamber of Deputies by Juan Morano (PDC) and Gabriel Boric (Ind.)
as part of the 60th electoral district, which includes the entire Magallanes y la Antártica Chilena Region.
and Carolina Goic (PDC) as part of the 19th senatorial constituency (Magallanes y la Antártica Chilena Region).