It has an area of 3,552 square kilometres (1,371 sq mi) and a total population of about 1.1 million. There are 58 comunes (Italian: comuni) in the province , see Comunes of the Province of Catania. The main comunes by population are:
There has been talk for many years of splitting the Province of Catania into three separate provinces with the southern part becoming the Province of Caltagirone, the north east of Etna becoming the Province of Acireale-Giarre-Taormina. The new province would include all of the municipalities south of the Simeto River as well as some of the municipalities of Ragusa and Caltanisetta. The proposal to create this tenth province has been put to referendum in the 1980s and was defeated and in the 1990s the proposal was reformulated and put towards the Assemblea Regionale Siciliana, and nothing has been acted upon since then.