There are 78 municipalities in Puerto Rico.
Names from CIA World Factbook (http://www.cia.gov/cia/publications/factbook/geos/rq)
... Bureau, the town has a total area 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 ...