Major Basilicas
There are only five major basilicas, all in Rome:
Minor Basilicas
The majority of basilicas are termed "minor basilicas". Some of these basilicas are also cathedrals (seats of dioceses.)
... of 11.3 km² (4.4 mi²). 10.6 km² (4.1 mi²) of it is land and 0.6 km² (0.2 mi²) of it is water. The total area is 5.73% water. ...