if you conctatct istat.it https://contact.istat.it/Index.php?Lingua=Inglese with few euro 50-100 can obtain all the information shape file, all the ppl coordinates, altitude, population, industries, etc.. with a free license
I think i have found all the data on the istat.it site population altitude ppl etc.
warning on the 2011 file contain only ppl with population >200 so use the oldest for coodinates of all ppl place
I dont' know if you see this http://www.istat.it/it/files/2013/11/Descrizione_Dati_Pubblicazione1.pdf description of shape data (I think you know a lot of Italian), there are many other informations usable on geonames.
seems a lot of ppl >200 don't have boundary box
Can you insert the ppl coodinates points for ppl<200?
It'is possible to have a qa for this new data?
Thanks