For gas stations you have 3 locations.
In term of police stations you can find 5 location in the region (like "Radar camera", "Jujan", "Policía de tránsito").
About pharmacies, 1 possibilities exist (like "Económica").
For supermarkets you have 5 places with "Comercial la colmena", "Comercial no tiene nombre", "Supermercado mini súper kaji" for example.