From the Wikipedia page 
Ribeira Grande de Santiago is a concelho (municipality) of Cape Verde. It is situated in the southwestern part of the island of Santiago. Its seat is the town Cidade Velha. Its population was 8,323 at the 2010 census and is 18th in population. The area is 137.3 km², the twelfth largest in Cape Verde.
The municipality consists of two freguesias (civil parishes):
- Santíssimo Nome de Jesus
- São João Baptista