Anywhere I can rent a PO box?

[lostravenblue]

Do they have PO boxes here? I need to recieve some mail, but I don't have a stable address.

 

[elhombresinnombre]

What about the internationally recognised Poste Restante service? You just need to specify which post office you will use to receive your mail. As it says in the link (below) there is a charge for this service.

¿Qué es Poste Restante? | Correo Argentino

Permite a una persona recibir sus envíos fuera de los medios ordinarios de entrega y sin necesidad de tener contratado previamente uno de los domicilios postales tradicionales. El remitente debe imponer el envío elegido (Simple, Certificado, Expreso o Encomienda), consignando la palabra “POSTE...

www.correoargentino.com.ar

Word to the wise: Other people are more successful than me with their post but I never seem to receive mail sent to me at my CABA address and none of the mail I post from CABA ever seems to arrive at its destination either. I strongly suggest you try the system out with something unimportant before you start to rely on it.

 

[D.B. Cooper]

They're called Casillas de Correo. They have them here at the Avenida de Mayo 770 branch of Correo Argentino.
Just three blocks from 9 the Julio Ave.
You can see them from the sidewalk as they're next to the window pane against the wall. Also the main branch in Retiro should have them as well. They are rented annually or bi-annually.

 

[elhombresinnombre]

They're called Casillas de Correo. They have them here at the Avenida de Mayo 770 branch of Correo Argentino.
Just three blocks from 9 the Julio Ave.
You can see them from the sidewalk as they're next to the window pane against the wall. Also the main branch in Retiro should have them as well. They are rented annually or bi-annually.

It's a good idea but I suspect they will require some Argentine ID to set it up and as I recall, the OP doesn't have any. Poste Restante is designed for foreigners just breezing on through and I should hope that his foreign documents would be fine.