In term of town halls you can find 1 location in the region (like "Municipalidad"). In term of police stations you can find 1 places (like "Policía").
You can find 1 gas stations locally like "San Jorge"
For hospitals you have 1 places with "Dispensario" for example.
The main cities are the following: Lozada, Monte Ralo.
Are you looking for an apartment for sale/rent? Or interested by a house? You can check that on Zonaprop.