In Italy, the comune, (plural comuni) is the basic administrative unit of both provinces and regions, and may be properly approximated in casual speech by the English word township or municipality.
As of the 2001 census, there were 8,101 comuni in Italy; they vary considerably in area and population.
For example, the comune of Rome (Lazio) has an area of 1,285.30 km² and a population of 2,546,804, and is both the largest and the most populated comune in Italy; Fiera di Primiero, in the province of Trento, is the smallest comune by area, with only 0.10 km², and Morterone (province of Lecco) is the smallest by population, with only 33 inhabitants.
The density of comuni varies widely by province and region: the province of Bari, for example, has 1,564,000 inhabitants in 48 municipalities, or over 32,000 inhabitants per municipality; whereas the Aosta Valley has 121,000 inhabitants in 74 municipalities, or 1,630 inhabitants per municipality — roughly twenty times more communal units per inhabitant. There are inefficiencies at both ends of the scale, and there is concern about optimizing the size of the comuni so they may best function in the modern world, but planners are hampered by the historical resonances of the comuni, which often reach back many hundreds of years, or even a full millennium: while provinces and regions are creations of the central government, and subject to fairly frequent border changes, the natural cultural unit is indeed the comune, — for many Italians, their hometown: in recent years especially, it has thus become quite rare for comuni either to merge or to break apart.
A comune usually comprises: